1). Style clip-on stable to wear. 2). Support A2DP,AVRCP,bluetooth headset,handfree profile 3) .Redial the last call ,Reject Features: 1). Style clip-on stable to wear. 2). Support A2DP,AVRCP,bluetooth headset,handfree profile 3) .Redial the last call ,Reject call.Volume adjustable. 4). Faster connecting,clear sound,anti-interference. 5). Listen to MP3 music from cellphone. 6). Listen to stereo music from PC. 7). On-line chat through BT wireless transmitter Specification: 1) BT protocol: version 2.1 2) Frequency: 2.4 GHz 3) BT range: 10meters. 4) Net weight: 28.5g5) Power supply:DC5.1V/120Ma 6) Working volt: 3.7V7) Battery:  rechargeable Li-Ion  battery    Talking time:up to 5.5 hours    Standby time: up to 140 hours    Charging time: about 2 hours. 8) Color: Black Accessories: 1).USB charging line. 2).User guide.

sports stereo bluetooth headset