Highlights Bluetooth version 2.1 (class 2) supports Bluetooth A2DP profile with 3.5mm stereo plug Support Bluetooth audio & video remote control profile Features Bluetooth Version 2.1 (Class II) Supports Bluetooth A2DP profile with 3.5mm stereoplug. Distance: Within 10 meters Talk Time: 7 Hours Standby Time: 150 Hours Battery: Built-in Rechargeable Lithium battery Support Bluetooth audio & video remote control profile; Unit size 60 x 24 x 9mm, weight: