La description

Specification
Wireless Bluetooth Headphone
Speaker: *0mm
Sensitivity: **8dB SP.L at 1kHz
Speak frequency response: *0 - *0,**0Hz 4
Rated power: **0mW
Power capability: 1,**0mW
Plug type: 3.5mm stereo
Weight:*3g
Packaging weight:**6g
 
Bluetooth Specifications.
Bluetooth version: V3.0 + EDR compatible with V2.1, V2.0, V1.1
The transmission power: Class2
The transmission frequency: 2.4GHz
The transmission distance: *0 meters
Support for file formats: A2DP, Headset and Handsfree mode
Music playback time: 8 hours
Talk time: *6 hours
Standby time: **0 hours

Product Features
Fashion design, high-end products
Support all Bluetooth devices
Common to all phones
Adjustable headset comfortable to wear
Support A2DP music player
Long talk time
The function keys: Volume + -, music playback, pause, previous song, next song
Then hang up, reject calls, last number call-back