Bluetooth version: V1.2 Profiles: headset,handsfree A2DP stereo and AVRCP remote Listen time: 6 hours Talk time: 7 hours Standby time: 120 hours Charge time: 2.5 to 3.5 hours Operation range: 10 meters Weight: about 15.5 grams Dimention:(L x W x D) 41.2 x 27.3 x 10.5mm Power source: built-in Lithium polymer battery Features: transfers between a call and music,next,previous,stop,song function Some fuctions is up to your phone and net