1.Bluetooth specification: version 1.2
2.Bluetooth profile supported: headset and handfree profiles
3 Works with all major Bluetooth mobile phones
4.Rang of frequency: 2.4GHZ spectrum
5.Broadcast range up to 10M
6.Volumn control and mute button
7.Power button (answer/end calls)
8.Built-in rechargeable Lithium polymer battery
9.Can speak up to 6 hours
10.Up to 100 hours of standing time
11.Power adapter
12.Working condition: Temperature:
Operation/storage: --15 ℃ to 55 ℃, charge 0℃ to 45℃