M-B8 Bluetooth 5.0 Mini Invisible In-ear Stereo Wireless Bluetooth Earphone with Charging Box (Black) Type-DVI Series Built-in 1200mAh battery

Built-in 1200mAh battery

For Dell: XPS13

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- Demonstration pen x1

Li-Polymer battery for OnePlus 3T

M-B8 Bluetooth 5.0 Mini Invisible In-ear Stereo Wireless Bluetooth Earphone with Charging Box (Black) Type-DVI Series Built-in 1200mAh battery1. Transmission range: 10 meters 2. Bluetooth version: 5. 0 3. With charging compartment, support for fast charging of earphones 4. The headset will automatically connect back after turning on 5. Multi function one key blind press control, easy to use 6. IP7 waterproof rating, effectively preventing sweat from damaging components 7. Magnetic induction, convenient for earphone storage 8. CVC noise reduction, clearer calls 9. After connection, the