Specification:
Bluetooth version: V4.0+EDR
Frequency range: 2.402GHz-2.480GHz
Transmission range: 20-30 meters
Charging time: 1 hour
Standby time: 160 hours
Working time: ≤8 hours
Unilateral headset power: 0.5W
Li-ion battery: 3.7V / 150mAh
Charging voltage: 5V