1. Bluetooth V2.0+EDR Class 2
2. RF frequency range: 2.402-2.480GHZ, 2.4G ISM band
3. Radio performance: receive sensitivity of -90dBm,TX power max 4dBm
4. Supports handsfree speaker volume gain control
5. LED indicator status: blue, red
6. With rechargeable 70mAh Li-Polymer battery
7. Nominal charging time: Max 1.5 hours
8. Talk time: up to 3.5 hours
9. Standby Time: Up to 60 hours
10. Dimensions (main body): 42.5(L) x 20 (W) x 11.3 (H) mm
11. Weight: 8.8 grams
12. Operating temperature: -10 ~ 50 centigrade
13. Storage temperature : -20 ~ 80 centigrade
14. CE & BQB certified
We accept OEM/ODM designed.