model number :M820   Sell like hot cakes style .

The bluetooth version: V4.0 + EDR .

Bluetooth mode :Hands free/Headset

.Radio frequency : 2.4GHz

.Transmission power : Class2

.Support functions: the voice prompt operation ,Voice controlAnswer the phone(YES, .Support functions: the voice prompt operation,Voice control Answer the phone(Say"YES"answer the phone,say “NO”Refuse to listen the phone)

.Supports A2DP music broadcast;

Function buttons: play, pause, next,back, Volume up and down.

soundreduction,IOSPower display Power saving mode .

Double equipment connection;1 drag 2  Connect two phones at the same time  easilyconversion  .

Transmission range of up to 10 m .

The charger power supply AC 110-240 - v DC output 5 v input .

Talk time 5 hours . 260 hours of standby time .

appearance size 47*10 *18 mm .

product weight:8g;color:black and white;