Lenovo X4 Bluetooth 5.0 Waterproof Bone Conduction Wireless Bluetooth Earphone(Black)

1. Bluetooth version: 5.02. Battery capacity: 150mAh3. Transmission distance: 10 meters4. Charging time: about 2 hours5. Play time: 8 hours (70% volume)6. Charging input: 5V 500mA7. Transmit sound to the hearing through bone conduction achieving the ideal effect of not damaging the eardrum8. Effectively reduce sound leakage and take care of privacy9. Ergonomic design comfortable to wear10. With IP5 waterproof IP6 dustproof function11. Memory titanium alloy frame adapt to any distortion of the shape according to different head sizes12. One-key operation easy to use13. Weight: 25g