Specification:

1.Drive:40mm

2.Impedance:32 OHM

3.Bluetooth version:Bluetooth v4.0+EDR

4.Power Level:CLASS II

5.Output power:30mW

6.Bluetooth distance:10 meters barrier

7.Frequency response:20-20000 Hz

8.Operating voltage range:3.0V-4.2V

9.Microphone sensitivity:-42dB

10.Charging time is about 1 hour(power indicator charging:blue light lights,fully charged:blue light goes out)

11.Dimensions:Diameter length 20MM.Width 15MM.18MM high

15.Weight about :4g

16.Talk time about 4 hours

17.Music Time about 3 hours

18.The standby time is about 3-4 days

19.Charging Power:DC5V/1A 

20.Compatible:Compatible with Android,Apple,Microsoft,Symbian 99% of with bluetooth cell phones(IOS cell phone has power display)

Featues:

Bluetooth 4.0   Supperior compatibility. ,4.0 smart chip, Efficient transmission speed.
Copact, ultra light design. Stereo bluetooth headset, portable and easy to carry.
High sound quality, enjoy music with wireless connection.
Voice report number, low power remind, connect/disconnect remind. Boot off prompts.
Allows you to conveniently answer calls while driving.
Long battery life and fast charging.
Support Wechat QQ voice call and movie sound.
Compatible with all most all mobile phones and tablet PC etc. Support pair with two mobile phones at the same time.