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$32.00
Color: black

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