Extremely good quality,superior clear voice 
Elegant and Fashion design 
Bluetooth version 2.1+EDR 
Supports HSP(Headset file) and HFP(Handsfree file) profiles 
Rechargeable Battery: Li-ion 
Volume control key, adjust the volume 
Extremely Light: Only 8g 
Automatic cennecting function 
Bluetooth Handsfree,answer call and call the last coming NO. 
Voice Dialing,Re-dialing,refusal of incoming call function 
Supporting edition:2.1+EDR 
Frequency range:2.4GHz-2.48GHz 
Transmission power:class2 
Transmission distance:10M 
Operating voltage:3.6V 
Operating current:≤35mA 
Standby current:≤2mA 
Charger power:Input 100-240V AC,Output 5V DC 
Working temperature:-20°C-60°C 
No working temperature:-20°C-60°C 
Charging temperature:0°C-45°C 
Charging time:2 hours 
Talking time:6 hoursStandby time:120 hours