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Electronics > Audio > Portable Audio & Accessories > Headphones & Earbuds > True Wireless Earbuds

TWS Wireless Bluetooth Earbuds EL-1520 with 300mAh Charging Case IPX4

Brand: Generic / OEM • Audited BOM: 10 Components
Observed Retail See Benchmarks
China Factory FOB $ ••.•• 🔒 FOB
US Landed Margin ••% 🔒 Margin

🛠️ Troubleshooting Guide & Return Mitigation

Verified Self-Service Base

Quick guide for EL-1520 Earbuds: usage, care, and common troubleshooting to ensure the best experience and prevent returns.

RMA Prevention Tags: #correct_charging #cleaning_maintenance #bluetooth_pairing #case_care
🔍 Colloquial Consumer Search Queries:
“earbuds not connecting” “bluetooth earbuds no sound” “earbuds case not charging” “tws mic quality” “how to clean wireless earbuds”

🚀 Quick Start & Safe Operation Guide

1
Fully charge the case and earbuds before first use. Connect the USB-C cable to the case and a power source.
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⚡ Easy DIY Troubleshooting & Common Fixes

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One earbud isn't working or isn't charging in the case.
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Common root cause: Poor contact on the charging pins in the case or accumulated dirt.
Step-by-step solution: Gently clean the metal charging pins on the case and earbuds with a dry cotton swab. Ensure the earbuds are seated correctly in the case.
💡 Pro tip: Keep the charging pins clean and dry to ensure good contact.
📸 Evidence to provide support: Clear photo of earbud and case charging pins.
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+3 Exclusive Verified Technical Solutions Locked
Engineering diagnostics for mechanical jams, thermal overloads, and seal failures available in the Full Dossier.
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🚫 What NEVER to Do (Common Misuse Warnings)

⚠️ Charging the case with high-voltage power sources (e.g., turbo phone chargers) or using damaged cables.
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Consequence: Damage to the case battery and/or charging circuits, potentially causing overheating or complete failure.
✓ How to avoid: Use a standard 5V/1A USB charger or a computer's USB port. Use only USB-C cables in good condition.
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Engineering alerts to prevent motor burnout, voided manufacturer warranty, and catastrophic component breakdown.
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⚙️ Hardware Setup, Adjustments & FAQs

❓ How to reset the earbuds to factory settings? cfg_01
Place both earbuds in the charged case. Keep the lid open and press the button on the back of the case for about 10-15 seconds, until the case LEDs flash differently. Then, remove the earbuds and pair them with your device again.
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⚖️ Seller Warranty & Marketplace Dispute Conciliation

Warranty should be claimed if, after following all self-resolution and prevention steps, the product exhibits persistent manufacturing defects, such as a battery failure that does not charge even with a charged case, permanent Bluetooth pairing failure without recovery, or if the audio drivers are defective without signs of misuse or physical damage. Refer to the seller's warranty and marketplace return policy for details.