Operation range: Up to 10 metersBluetooth version: V2.1+EDR

Dual Micphones Noise canceling Echo canceling Multi pairing,support to connect 2 cellphones  

Talk time: Up to 4 hours,

Standby time: Up to 120 hours

Dimensions(L x W x H): 40 x 18 x 9mm,

Weight: about 9 grams         Genernal Feature: pick up a call, end a call,reject a call,call redial mute, transfer a call,Volume adjustment,voice-dial

Noice cancelling bluetooth headset