1. Frequency range: 20-20000Hz
2. Sensitivity: -90dB±3dB
3. Total harmonic distortion: 0.1%
4. Blue Teeth Version: V4.2+EDR
5. Output Power: 2.402-2.480GHZ
6. Charging interface: mini USB charging hole
7. Battery Type: Lithium battery
8. Battery capacity: 230mAh
9. Charging time: 1-2 hours
10. Waiting time: 180 hours
