Mono Bluetooth Headset the SMALLEST! 
Version:  V3.0+EDR 
Mode:     Hands Free/Headset 
Frequency:2.4GHz 
Range:    10M 
Power:    AC Input 110-240V, DC Output 5V 
Talking Time: 3H about 
Standby Time: 75H about 
Dimmension: 35*18*9mm 
Product Weight: 3g about