Mini Wireless Dual TWS Earphone X21S Hidden Small Bluetooth Invisible Earbud 3 Hours Music Play With Charging Case 1 so you can adjust the

so you can adjust the size as many times as you wish

Packing list :

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Mini Wireless Dual TWS Earphone X21S Hidden Small Bluetooth Invisible Earbud 3 Hours Music Play With Charging Case 1 so you can adjust theOverview: 1. English voice prompt. 2. Call number broadcast. 3. IOS system power display. 4. Call answer reject. 5. Last number redial. 6. HD voice quality. 7. Solution: high end solutions. 8. Support mode: compatible with all Bluetooth versions. 9. Signal transmission channel: Cassl2. 10. Wear: semi in ear style wear. 11. Microphone sensitivity: 42DB backend high end transmitter. 12. The longest transmission range: 10 15 meters. Specification: How to