- Bluetooth Versions: 4.2

- Battery Output Voltage: 3.7V

- Battery Capacity: 70mAh

- Talk Time: 4 hours

- Music Time: 4 hours

- Full Charging Time: ≤2 hours

- Bluetooth Range: 10m

- Speaker Size: 10mm

- Receive Sensitivity: -85dBm

- Speaker Impedance: 16ohm

- Max Power: 10mW

- Frequency Response: 50Hz-20KHz *S/N: ≥90dB

- MIC Sensitivity: -42dB

Bluetooth Earphone R5