1 Bluetooth version: V4.0+EDR 

2 Bluetooth protocol: A2DP AVRCP HFP HSP
3. Support microphone to receive phone calls
4. Music play, support volume+-,next and last song switch
5. Support Chinese and English voice promt
6. Support last number redail
7. Report the incoming call numbers
8. Support operation voice prompt
9. Support connecting with 2 bluetooth devices at the same time.
10. Support low battery volume indicator for IOS system
11. Support Wechat, vehicle navigation,QQ voice softares ect.
12. Talking time: around 4-6 hours
13. Music playing time: around 4-5 hours
14. Standby time: around 150 hours
15. Product sizes:35.3*22.3*30mm
16: Weight: 14g
17. Bluetooth chipset: CSR8635