Description:
1. Bluetooth version: Bluetooth V2.1+EDR, compatibility with V2.0 and V1.2.
2. Transmission distance:10M(Class 2)
3. Frequency: 2.4 GHz-2.4835GHz,ISMBand.
4. Standby time: 220 hours
5. Talk time: 13 hours.
6. Charge hour: less than 3 hours.
7. Power supply;  DC5.0v ,100-240 V AC adapter.
8. Battery: rechargeable built-in lithium battery.
9. Working voltage: 3.3-4.2V
10. Data Encryption: 128bits encrypted.
11. Operation Moisture: 10%-90%(non-concrete status).
12. Operation Temperature:-10-55.C
13. Facility Saving Temperature:-20-60.C
14. Safety Regulation: CE,FCC,BQB,RoHS.
15. Connection: Peer to Peer. 
Accessories Options: 
Foam or protein leatherette ear cushion is optional
Structure Features:
1. With one line in connection with a telephone, the telephone bluetooth headset can be   
connected to a mobile phone at the same time.
2. Can answer both telephone and cell phone calls .
3. Supports headset profile and hands free profile.
4. Within 5-8m, cell phone and bluetooth headset connect automatically
5. Headset and indicator light.
6. Adjustable sound volume.
7. The headset shares basic functions of an analogue telephone.