Featues:
Lightweight and compact portable design. Simple and stylish.
Built-in Microphone, answer to the phone calls when paired with mobile phone.
Up to 4 hours of continuous talk time, 220 hours of standby time, long standby.
Compatible with most Bluetooth-enabled devices.
Comes with portable power bank(charger dock), built-in rechargeable battery, can provide charge for headset anytime; charging time is about 3 times.

Specifications:
Color:Black, White, Black+Silver, White+Silver , Black+Red,White+Red(optional)
Material: ABS
Product size: 70px*70px*50px (L*W*H)
Bluetooth version: V4.1
Charger dock charging voltage: DC 5V
Charger dock battery capacity: 450mAh (self-charging about 3 times)
Transmission distance: 10 meters
Continuous talk time: 4 hours
Standby time: 220 hours
Charging time: 2 hours
Support: HSP, HFP, A2DP
USB interface type: Micro
USB charging voltage: DC 5V
Speaker sensitivity: 100dB