Genernal Feature: pick up a call, end a call,reject a call,call redial mute, volume adjustment, voice dial.

Operation range: Up to 10 meters.

Bluetooth 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.

bluetooth earphone