Caracteristicas:
1) Connecting people with Bluetooth
2) Innovative design with human technology.
3) HSP & HFP supported
4) Compatible with almost all the Bluetooth phones
5) Crystal clear communication
6) Super lightweight makes you forget even you are wearing it.
7) Bluetooth version V2.1
8) Frequency range: 2.4GHz-2.4835GHz
9) Transmission power: Class 2
10) Transmission distance: 10M
11) Operating current:<=25Ma
12) Standby current:<=40ua
13) Charging time: 3-4 hour
14) Talking time: Up to 7 hour
15) Standby time: Up to 100hour
16) Operating voltage: 3.6V
18) Compatible with Windows 9X /ME /NT /2000 /XP /Vista /Windows 7