1> BT Version.:  4.1

2> Rang: 33FT/10 M

3> Battery: 50mAh

4> Voltage: 3.7V

5> Power: <100mW

6> Talking time: 4 H 

7> Charging time:1-2 H 

8> Charging way: USB 5V

9> Frequency Response: 2.402GHz-2.480GHz

10> Support HFP/HSP/A2DP/AVRCP