{"id":5784,"date":"2026-08-28T09:46:39","date_gmt":"2026-08-28T01:46:39","guid":{"rendered":"https:\/\/www.tashells.com\/?page_id=5784"},"modified":"2026-08-28T10:52:30","modified_gmt":"2026-08-28T02:52:30","slug":"testing-lab","status":"publish","type":"page","link":"https:\/\/www.tashells.com\/es\/testing-lab\/","title":{"rendered":"Earbuds Testing &amp; Laboratory"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"5784\" class=\"elementor elementor-5784\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5488af8 e-flex e-con-boxed e-con e-parent\" data-id=\"5488af8\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\" data-core-v316-plus=\"true\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1aef85e elementor-widget elementor-widget-text-editor\" data-id=\"1aef85e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.17.0 - 08-11-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<h1 class=\"md-end-block md-heading\"><span class=\"md-plain\">Bluetooth Earbuds Testing Lab<\/span><\/h1><h3 class=\"md-end-block md-heading\"><span class=\"md-plain\">Product Testing for OEM &amp; ODM Bluetooth Audio Projects<\/span><\/h3><p class=\"md-end-block md-p\"><span class=\"md-plain\">Tashells Audio is the Bluetooth audio manufacturing brand operated by Shenzhen iFree Electronics Ltd. Our production facility is located in <\/span><span class=\"md-pair-s \"><strong><span class=\"md-plain\">Fenggang, Dongguan, Guangdong, China<\/span><\/strong><\/span><span class=\"md-plain\">. Shenzhen iFree Electronics Ltd. was established in <\/span><span class=\"md-pair-s \"><strong><span class=\"md-plain\">2014<\/span><\/strong><\/span><span class=\"md-plain\"> with a focus on Bluetooth audio product development and manufacturing.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-plain\">Testing is an important part of moving a Bluetooth audio product from sample evaluation to stable mass production. Different earbuds require different test items, so our testing framework is based on the actual product configuration and the requirements confirmed for the order.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">Important:<\/span><\/strong><\/span><span class=\"md-plain\"> We do not use this page to claim testing equipment, laboratory accreditations or in-house certification capabilities that have not been specifically established. Regulatory certification, when required, should be handled according to the applicable product, destination market and testing requirements.<\/span><\/p><blockquote><p class=\"md-end-block md-p\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">Manufacturing Trust Cluster:<\/span><\/strong><\/span> <span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/earbuds-manufacturing-process\/\"><span class=\"md-plain\">Earbuds Manufacturing Process<\/span><\/a><\/span><span class=\"md-plain\"> \u00b7 <\/span><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/manufacturing-capabilities\/\"><span class=\"md-plain\">Manufacturing Capabilities<\/span><\/a><\/span><span class=\"md-plain\"> \u00b7 <\/span><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/earbuds-factory\/\"><span class=\"md-plain\">Factory<\/span><\/a><\/span><span class=\"md-plain\"> \u00b7 <\/span><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/quality-control\/\"><span class=\"md-plain\">Quality Control<\/span><\/a><\/span><span class=\"md-plain\"> \u00b7 <\/span><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/oem-process\/\"><span class=\"md-plain\">OEM Process<\/span><\/a><\/span><\/p><\/blockquote><p class=\"md-end-block md-p md-focus\"><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/contact-us\/\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">Discuss Your Product Testing Requirements \u2192<\/span><\/strong><\/span><\/a><\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-469d826 e-flex e-con-boxed e-con e-parent\" data-id=\"469d826\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\" data-core-v316-plus=\"true\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-83fc2fb elementor-widget elementor-widget-text-editor\" data-id=\"83fc2fb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"md-hr md-end-block\" tabindex=\"-1\"><hr \/><\/div><h3 class=\"md-end-block md-heading\"><span class=\"md-plain\">What Do We Test on Bluetooth Earbuds?<\/span><\/h3><p class=\"md-end-block md-p\"><span class=\"md-plain\">The exact test plan depends on whether the product is standard TWS, ANC, open-ear, gaming, translation-related or another Bluetooth audio configuration.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-plain\">Applicable checks can be grouped into the following areas.<\/span><\/p><div class=\"md-hr md-end-block\" tabindex=\"-1\"><hr \/><\/div><h3 class=\"md-end-block md-heading\"><span class=\"md-plain\">1. Bluetooth &amp; Connection Testing<\/span><\/h3><p class=\"md-end-block md-p\"><span class=\"md-plain\">Stable wireless operation is fundamental to a Bluetooth audio product.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-plain\">Depending on the model, checks can include:<\/span><\/p><ul class=\"ul-list\" data-mark=\"-\"><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Power on\/off<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Bluetooth discovery<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Pairing<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Automatic reconnection<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Left\/right earbud connection<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Music playback connection<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Call connection<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Basic control response<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Earbud-to-case interaction where applicable<\/span><\/p><\/li><\/ul><p class=\"md-end-block md-p\"><span class=\"md-plain\">The exact Bluetooth performance requirements depend on the selected platform and product specification.<\/span><\/p><div class=\"md-hr md-end-block\" tabindex=\"-1\"><hr \/><\/div><h3 class=\"md-end-block md-heading\"><span class=\"md-plain\">2. Audio Function Testing<\/span><\/h3><p class=\"md-end-block md-p\"><span class=\"md-plain\">Audio testing should confirm that the product operates correctly according to the approved configuration.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-plain\">Applicable checks can include:<\/span><\/p><ul class=\"ul-list\" data-mark=\"-\"><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Left\/right speaker operation<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Music playback<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Channel consistency<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Abnormal noise<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Basic listening evaluation<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Volume\/control operation<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">EQ or sound modes where applicable<\/span><\/p><\/li><\/ul><p class=\"md-end-block md-p md-focus\"><span class=\"md-plain\">For OEM\/ODM projects requiring acoustic adjustments, the available tuning options depend on the selected chipset, hardware and platform.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-70f2e49 e-flex e-con-boxed e-con e-parent\" data-id=\"70f2e49\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\" data-core-v316-plus=\"true\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0890517 elementor-widget elementor-widget-text-editor\" data-id=\"0890517\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"md-hr md-end-block\" tabindex=\"-1\"><hr \/><\/div><h3 class=\"md-end-block md-heading\"><span class=\"md-plain\">3. Microphone &amp; Call Testing<\/span><\/h3><p class=\"md-end-block md-p\"><span class=\"md-plain\">Microphone performance is important for everyday TWS use.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-plain\">Depending on the product, checks can include:<\/span><\/p><ul class=\"ul-list\" data-mark=\"-\"><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Microphone operation<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Voice pickup<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Call function<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Multiple-microphone operation where applicable<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">ENC\/call-noise-reduction functions where applicable<\/span><\/p><\/li><\/ul><p class=\"md-end-block md-p\"><span class=\"md-plain\">ENC terminology is often used commercially for call-noise-reduction functions. It should not be confused with ANC, which is designed primarily to reduce environmental noise heard by the wearer.<\/span><\/p><div class=\"md-hr md-end-block\" tabindex=\"-1\"><hr \/><\/div><h3 class=\"md-end-block md-heading\"><span class=\"md-plain\">4. ANC &amp; Transparency Function Testing<\/span><\/h3><p class=\"md-end-block md-p\"><span class=\"md-plain\">For <\/span><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/product-category\/anc-earbuds-manufacturer\/\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">ANC earbuds<\/span><\/strong><\/span><\/a><\/span><span class=\"md-plain\">, applicable checks can include:<\/span><\/p><ul class=\"ul-list\" data-mark=\"-\"><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">ANC mode activation<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Mode switching<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Transparency\/ambient mode where applicable<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Left\/right function<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Basic real-world listening evaluation<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Microphone\/function operation related to the ANC configuration<\/span><\/p><\/li><\/ul><p class=\"md-end-block md-p md-focus\"><span class=\"md-plain\">ANC performance depends on the complete product system, including microphones, acoustic structure, ear-tip seal, speaker, chipset\/algorithm and tuning. A single marketing number should not replace sample evaluation.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a8afe96 e-flex e-con-boxed e-con e-parent\" data-id=\"a8afe96\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\" data-core-v316-plus=\"true\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-da58325 elementor-widget elementor-widget-text-editor\" data-id=\"da58325\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"md-hr md-end-block\" tabindex=\"-1\"><hr \/><\/div><h3 class=\"md-end-block md-heading\"><span class=\"md-plain\">5. Charging &amp; Power Function Testing<\/span><\/h3><p class=\"md-end-block md-p\"><span class=\"md-plain\">Bluetooth earbuds and charging cases need to operate as one charging system.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-plain\">Depending on the model, checks can include:<\/span><\/p><ul class=\"ul-list\" data-mark=\"-\"><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Earbud charging<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Charging-case charging<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Charging contacts<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">USB charging interface<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Charging indication<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Battery\/power indication where applicable<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Basic power-on and power-off behavior<\/span><\/p><\/li><\/ul><p class=\"md-end-block md-p\"><span class=\"md-plain\">Battery-life claims and detailed endurance requirements should be evaluated according to the agreed product specification and test conditions.<\/span><\/p><div class=\"md-hr md-end-block\" tabindex=\"-1\"><hr \/><\/div><h3 class=\"md-end-block md-heading\"><span class=\"md-plain\">6. Touch Control &amp; Button Testing<\/span><\/h3><p class=\"md-end-block md-p\"><span class=\"md-plain\">Many Bluetooth earbuds use touch controls, physical buttons or both.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-plain\">Applicable checks can include functions such as:<\/span><\/p><ul class=\"ul-list\" data-mark=\"-\"><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Play\/pause<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Call answer\/end<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Track control<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Volume control where supported<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">ANC\/transparency switching<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Voice assistant activation where supported<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Gaming\/low-latency mode where supported<\/span><\/p><\/li><\/ul><p class=\"md-end-block md-p md-focus\"><span class=\"md-plain\">The actual control map depends on the selected product platform.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f543c39 e-flex e-con-boxed e-con e-parent\" data-id=\"f543c39\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\" data-core-v316-plus=\"true\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c0dcc85 elementor-widget elementor-widget-text-editor\" data-id=\"c0dcc85\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"md-hr md-end-block\" tabindex=\"-1\"><hr \/><\/div><h3 class=\"md-end-block md-heading\"><span class=\"md-plain\">7. Open Ear Product Testing<\/span><\/h3><p class=\"md-end-block md-p\"><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/product-category\/open-ear-earbuds-manufacturer\/\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">Open ear earbuds<\/span><\/strong><\/span><\/a><\/span><span class=\"md-plain\"> require additional attention because their wearing and acoustic structures differ from sealed in-ear TWS.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-plain\">Evaluation can include:<\/span><\/p><ul class=\"ul-list\" data-mark=\"-\"><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Wearing stability<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Comfort<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Left\/right fit<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Speaker positioning<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Audio function<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Microphone function<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Sound leakage evaluation<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Charging<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Product controls<\/span><\/p><\/li><\/ul><p class=\"md-end-block md-p\"><span class=\"md-plain\">Because ear shapes vary, we recommend that B2B customers evaluate samples with multiple users before approving a model for bulk production.<\/span><\/p><div class=\"md-hr md-end-block\" tabindex=\"-1\"><hr \/><\/div><h3 class=\"md-end-block md-heading\"><span class=\"md-plain\">8. Appearance &amp; Assembly Inspection<\/span><\/h3><p class=\"md-end-block md-p\"><span class=\"md-plain\">Testing is not limited to electronics.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-plain\">Applicable product inspection can also include:<\/span><\/p><ul class=\"ul-list\" data-mark=\"-\"><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Surface appearance<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Housing assembly<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Visible gaps<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Product cleanliness<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Color<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Logo<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Charging-case appearance<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Left\/right consistency<\/span><\/p><\/li><\/ul><p class=\"md-end-block md-p\"><span class=\"md-plain\">For private-label orders, approved branding requirements form part of the final product expectation.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1db0faa e-flex e-con-boxed e-con e-parent\" data-id=\"1db0faa\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\" data-core-v316-plus=\"true\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1afa99e elementor-widget elementor-widget-text-editor\" data-id=\"1afa99e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"md-hr md-end-block\" tabindex=\"-1\"><hr \/><\/div><h3 class=\"md-end-block md-heading\"><span class=\"md-plain\">9. Packaging &amp; Accessory Checks<\/span><\/h3><p class=\"md-end-block md-p\"><span class=\"md-plain\">Before shipment, applicable checks can include:<\/span><\/p><ul class=\"ul-list\" data-mark=\"-\"><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Correct product<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Correct color<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Logo<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Packaging artwork<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">User manual<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Labels<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Barcode<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Accessories<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Quantity<\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-plain\">Carton marks<\/span><\/p><\/li><\/ul><p class=\"md-end-block md-p md-focus\"><span class=\"md-plain\">See <\/span><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/custom-packaging\/\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">Custom Packaging \u2192<\/span><\/strong><\/span><\/a><\/span><span class=\"md-plain\">.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-65d100b e-flex e-con-boxed e-con e-parent\" data-id=\"65d100b\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\" data-core-v316-plus=\"true\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a79a9fd elementor-widget elementor-widget-text-editor\" data-id=\"a79a9fd\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"md-hr md-end-block\" tabindex=\"-1\"><hr \/><\/div><h3 class=\"md-end-block md-heading\"><span class=\"md-plain\">Sample Testing Before Mass Production<\/span><\/h3><p class=\"md-end-block md-p\"><span class=\"md-plain\">For B2B OEM\/ODM projects, we strongly recommend that customers evaluate samples before approving mass production.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-plain\">A customer sample review should consider actual use rather than only reading a specification sheet.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-plain\">For example:<\/span><\/p><h4 class=\"md-end-block md-heading\"><span class=\"md-plain\">ANC Earbuds<\/span><\/h4><p class=\"md-end-block md-p\"><span class=\"md-plain\">Test ANC in realistic noisy environments, not only in a quiet room.<\/span><\/p><h4 class=\"md-end-block md-heading\"><span class=\"md-plain\">Open Ear Earbuds<\/span><\/h4><p class=\"md-end-block md-p\"><span class=\"md-plain\">Evaluate comfort, stability and sound leakage with multiple users.<\/span><\/p><h4 class=\"md-end-block md-heading\"><span class=\"md-plain\">TWS Earbuds<\/span><\/h4><p class=\"md-end-block md-p\"><span class=\"md-plain\">Check pairing, calls, music, charging, controls and overall usability.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-plain\">Sample approval then becomes an important reference for the production order.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-plain\">See our <\/span><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/oem-process\/\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">OEM Process \u2192<\/span><\/strong><\/span><\/a><\/span><span class=\"md-plain\">.<\/span><\/p><div class=\"md-hr md-end-block\" tabindex=\"-1\"><hr \/><\/div><h3 class=\"md-end-block md-heading\"><span class=\"md-plain\">Testing During the Manufacturing Process<\/span><\/h3><p class=\"md-end-block md-p\"><span class=\"md-plain\">Testing should not be treated as a single isolated event.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-plain\">The broader production workflow includes specification confirmation, material preparation, assembly, functional checks, cosmetic inspection, branding\/packaging verification and final inspection.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-plain\">See <\/span><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/earbuds-manufacturing-process\/\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">Earbuds Manufacturing Process \u2192<\/span><\/strong><\/span><\/a><\/span><span class=\"md-plain\"> and <\/span><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/quality-control\/\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">Quality Control \u2192<\/span><\/strong><\/span><\/a><\/span><span class=\"md-plain\">.<\/span><\/p><div class=\"md-hr md-end-block\" tabindex=\"-1\"><hr \/><\/div><h3 class=\"md-end-block md-heading\"><span class=\"md-plain\">Regulatory Testing vs. Factory Product Testing<\/span><\/h3><p class=\"md-end-block md-p\"><span class=\"md-plain\">These are not the same thing.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">Factory\/product testing<\/span><\/strong><\/span><span class=\"md-plain\"> focuses on whether the manufactured product functions and matches the agreed order requirements.<\/span><\/p><p class=\"md-end-block md-p\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">Regulatory\/compliance testing<\/span><\/strong><\/span><span class=\"md-plain\"> depends on the destination market, product configuration and applicable regulations, and may require qualified third-party testing or documentation.<\/span><\/p><p class=\"md-end-block md-p md-focus\"><span class=\"md-plain\">We recommend confirming market requirements before mass production rather than assuming that one report or certification applies to every customized configuration.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-67dc980 e-flex e-con-boxed e-con e-parent\" data-id=\"67dc980\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\" data-core-v316-plus=\"true\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8fdaaa4 elementor-widget elementor-widget-text-editor\" data-id=\"8fdaaa4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"md-hr md-end-block\" tabindex=\"-1\"><hr \/><\/div><h1 class=\"md-end-block md-heading\"><span class=\"md-plain\">Testing Lab FAQ<\/span><\/h1><h4 class=\"md-end-block md-heading\"><span class=\"md-plain\">Do you test every product in exactly the same way?<\/span><\/h4><p class=\"md-end-block md-p\"><span class=\"md-plain\">No. Test items depend on the model, functions and agreed requirements.<\/span><\/p><h4 class=\"md-end-block md-heading\"><span class=\"md-plain\">Do you test ANC earbuds?<\/span><\/h4><p class=\"md-end-block md-p\"><span class=\"md-plain\">Applicable ANC and transparency functions can be checked for ANC models. Customers should also evaluate approved samples in realistic environments.<\/span><\/p><h4 class=\"md-end-block md-heading\"><span class=\"md-plain\">Do you test open-ear products differently?<\/span><\/h4><p class=\"md-end-block md-p\"><span class=\"md-plain\">Yes. Open-ear products require attention to wearing stability, comfort, speaker positioning and sound leakage in addition to standard Bluetooth audio functions.<\/span><\/p><h4 class=\"md-end-block md-heading\"><span class=\"md-plain\">Is regulatory certification performed in your factory?<\/span><\/h4><p class=\"md-end-block md-p\"><span class=\"md-plain\">Regulatory requirements vary by market and product. Where formal certification or accredited testing is required, it should be handled according to the applicable requirements. We do not present this page as a claim of accredited laboratory status.<\/span><\/p><h4 class=\"md-end-block md-heading\"><span class=\"md-plain\">Can a customer define additional test requirements?<\/span><\/h4><p class=\"md-end-block md-p\"><span class=\"md-plain\">Project-specific quality and testing requirements can be discussed before order confirmation so that feasibility can be evaluated.<\/span><\/p><div class=\"md-hr md-end-block\" tabindex=\"-1\"><hr \/><\/div><h3 class=\"md-end-block md-heading\"><span class=\"md-plain\">Testing Is Part of a Larger Manufacturing System<\/span><\/h3><p class=\"md-end-block md-p\"><span class=\"md-plain\">Explore the related pages:<\/span><\/p><ul class=\"ul-list\" data-mark=\"-\"><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/earbuds-manufacturing-process\/\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">Earbuds Manufacturing Process<\/span><\/strong><\/span><\/a><\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/manufacturing-capabilities\/\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">Manufacturing Capabilities<\/span><\/strong><\/span><\/a><\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/earbuds-factory\/\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">Factory<\/span><\/strong><\/span><\/a><\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/quality-control\/\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">Quality Control<\/span><\/strong><\/span><\/a><\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/oem-process\/\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">OEM Process<\/span><\/strong><\/span><\/a><\/span><\/p><\/li><li class=\"md-list-item\"><p class=\"md-end-block md-p\"><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/oem-odm-service\/\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">OEM &amp; ODM Service<\/span><\/strong><\/span><\/a><\/span><\/p><\/li><\/ul><p class=\"md-end-block md-p\"><span class=\"md-meta-i-c md-link\"><a href=\"https:\/\/www.tashells.com\/contact-us\/\"><span class=\"md-pair-s \"><strong><span class=\"md-plain\">Tell Us What You Need to Test \u2192<\/span><\/strong><\/span><\/a><\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-86d6097 e-flex e-con-boxed e-con e-parent\" data-id=\"86d6097\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\" data-core-v316-plus=\"true\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fdb855b elementor-widget elementor-widget-wpforms\" data-id=\"fdb855b\" data-element_type=\"widget\" data-widget_type=\"wpforms.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div class=\"wpforms-container wpforms-container-full wpforms-render-modern\" id=\"wpforms-178\"><form id=\"wpforms-form-178\" class=\"wpforms-validate wpforms-form wpforms-ajax-form\" data-formid=\"178\" method=\"post\" enctype=\"multipart\/form-data\" action=\"\/es\/wp-json\/wp\/v2\/pages\/5784\" data-token=\"bae34fc3230a11d95b564cc6c12c3a35\" data-token-time=\"1787902137\"><noscript class=\"wpforms-error-noscript\">Por favor, activa JavaScript en tu navegador para completar este formulario.<\/noscript><div id=\"wpforms-error-noscript\" style=\"display: none;\">Por favor, activa JavaScript en tu navegador para completar este formulario.<\/div><div class=\"wpforms-field-container\"><div id=\"wpforms-178-field_0-container\" class=\"wpforms-field wpforms-field-name\" data-field-id=\"0\"><label class=\"wpforms-field-label\" for=\"wpforms-178-field_0\">*Name <span class=\"wpforms-required-label\" aria-hidden=\"true\">*<\/span><\/label><input type=\"text\" id=\"wpforms-178-field_0\" class=\"wpforms-field-medium wpforms-field-required\" name=\"wpforms[fields][0]\" aria-errormessage=\"wpforms-178-field_0-error\" required><\/div><div id=\"wpforms-178-field_1-container\" class=\"wpforms-field wpforms-field-email\" data-field-id=\"1\"><label class=\"wpforms-field-label\" for=\"wpforms-178-field_1\">*Email(We will reply you via email in 24 hours) <span class=\"wpforms-required-label\" aria-hidden=\"true\">*<\/span><\/label><input type=\"email\" id=\"wpforms-178-field_1\" class=\"wpforms-field-medium wpforms-field-required\" name=\"wpforms[fields][1]\" spellcheck=\"false\" aria-errormessage=\"wpforms-178-field_1-error\" required><\/div><div id=\"wpforms-178-field_3-container\" class=\"wpforms-field wpforms-field-text\" data-field-id=\"3\"><label class=\"wpforms-field-label\" for=\"wpforms-178-field_3\">Phone\/WhatsApp\/WeChat(Very important)<\/label><input type=\"text\" id=\"wpforms-178-field_3\" class=\"wpforms-field-medium\" name=\"wpforms[fields][3]\" aria-errormessage=\"wpforms-178-field_3-error\" ><\/div><div id=\"wpforms-178-field_2-container\" class=\"wpforms-field wpforms-field-textarea\" data-field-id=\"2\"><label class=\"wpforms-field-label\" for=\"wpforms-178-field_2\">*Enter product details such as model, color, materials etc. and other specific requirements to receive an accurate quote.<\/label><textarea id=\"wpforms-178-field_2\" class=\"wpforms-field-medium\" name=\"wpforms[fields][2]\" aria-errormessage=\"wpforms-178-field_2-error\" ><\/textarea><\/div><\/div><!-- .wpforms-field-container --><div class=\"wpforms-recaptcha-container wpforms-is-recaptcha wpforms-is-recaptcha-type-v2\" ><div class=\"g-recaptcha\" data-sitekey=\"6LcwpyMpAAAAAJRWcB_WdfQodkoDcUQv70yIYK-j\"><\/div><input type=\"text\" name=\"g-recaptcha-hidden\" class=\"wpforms-recaptcha-hidden\" style=\"position:absolute!important;clip:rect(0,0,0,0)!important;height:1px!important;width:1px!important;border:0!important;overflow:hidden!important;padding:0!important;margin:0!important;\" data-rule-recaptcha=\"1\"><\/div><div class=\"wpforms-submit-container\" ><input type=\"hidden\" name=\"wpforms[id]\" value=\"178\"><input type=\"hidden\" name=\"page_title\" value=\"\"><input type=\"hidden\" name=\"page_url\" value=\"https:\/\/www.tashells.com\/es\/wp-json\/wp\/v2\/pages\/5784\"><input type=\"hidden\" name=\"url_referer\" value=\"\"><button type=\"submit\" name=\"wpforms[submit]\" id=\"wpforms-submit-178\" class=\"wpforms-submit\" data-alt-text=\"Send...\" data-submit-text=\"Send\" aria-live=\"assertive\" value=\"wpforms-submit\">Send<\/button><img decoding=\"async\" src=\"https:\/\/www.tashells.com\/wp-content\/plugins\/wpforms-lite\/assets\/images\/submit-spin.svg\" class=\"wpforms-submit-spinner\" style=\"display: none;\" width=\"26\" height=\"26\" alt=\"Cargando\"><\/div><\/form><\/div>  <!-- .wpforms-container -->\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Bluetooth Earbuds Testing Lab Product Testing for OEM &amp; ODM Bluetooth Audio Projects Tashells Audio is the Bluetooth audio manufacturing brand operated by Shenzhen iFree Electronics Ltd. Our production facility is located in Fenggang, Dongguan, Guangdong, China. Shenzhen iFree Electronics Ltd. was established in 2014 with a focus on Bluetooth audio product development and manufacturing.&hellip;&nbsp;<a href=\"https:\/\/www.tashells.com\/es\/testing-lab\/\" class=\"\" rel=\"bookmark\">Leer m\u00e1s &raquo;<span class=\"screen-reader-text\">Earbuds Testing &amp; Laboratory<\/span><\/a><\/p>","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-templates\/template-pagebuilder-full-width.php","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","_themeisle_gutenberg_block_has_review":false,"footnotes":""},"class_list":["post-5784","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.9.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Bluetooth Earbuds Testing Lab | Product Testing | Tashells Audio<\/title>\n<meta name=\"description\" content=\"Learn how Tashells Audio evaluates Bluetooth earbuds through functional, audio, microphone, ANC, charging, battery, appearance and product-specific testing.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.tashells.com\/es\/testing-lab\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bluetooth Earbuds Testing Lab | Product Testing | Tashells Audio\" \/>\n<meta property=\"og:description\" content=\"Learn how Tashells Audio evaluates Bluetooth earbuds through functional, audio, microphone, ANC, charging, battery, appearance and product-specific testing.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.tashells.com\/es\/testing-lab\/\" \/>\n<meta property=\"og:site_name\" content=\"Tashells Audio | Bluetooth Earbuds Manufacturer | OEM TWS Factory in China\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-28T02:52:30+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.tashells.com\/wp-content\/plugins\/wpforms-lite\/assets\/images\/submit-spin.svg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.tashells.com\/testing-lab\/\",\"url\":\"https:\/\/www.tashells.com\/testing-lab\/\",\"name\":\"Bluetooth Earbuds Testing Lab | Product Testing | Tashells Audio\",\"isPartOf\":{\"@id\":\"https:\/\/www.tashells.com\/#website\"},\"datePublished\":\"2026-08-28T01:46:39+00:00\",\"dateModified\":\"2026-08-28T02:52:30+00:00\",\"description\":\"Learn how Tashells Audio evaluates Bluetooth earbuds through functional, audio, microphone, ANC, charging, battery, appearance and product-specific testing.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.tashells.com\/testing-lab\/#breadcrumb\"},\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.tashells.com\/testing-lab\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.tashells.com\/testing-lab\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.tashells.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Earbuds Testing &amp; 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