Lenovo X3Pro Bone Conduction Bluetooth Sports Earphone 1. Bluetooth version: 5.3 2. Vibration speaker size: 16mm 3. Transmission distance: more than or equal to 10m 4. Play time: 7h 5. Charging time: 2h 6. Speaker specifications: 0.5W, 8, 86+3dB 7. Charging interface: USB micro 8. Rated input: 5V 100mA 9. Battery capacity: 135mAh
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