Bluetooth version: V1 Talk time: upto 5 hours Standby time: upto 150 hours Charge time: 1.2 to 2.5 hours Weight: only 8 grams Dimension: ( L x W x D) 40 x 18 x 16mm Operation range: 10 meters Power Source: built-in Lithium polymer battery Profiles: headset,handsfree Features: answer, end and reject call Redialing,voice dialing and call waiting Three-way calling Volume adjustment Some functions is up to your phone and net