Bluetooth audio receiver with built-in battery Standby time of 230 hours and up to 12 hours of working time Uses 3.5 mm stereo jack to connect to your home stereo, TV, car audio, etc… Works with all mp3-players, phones, tablets or PC’s that can stream music via Bluetooth Signal reach up to 10 m Specifications Interface: Bluetooth v.2.1, Class II Bluetooth frequency range: 2.402 GHz – 2.480 GHz Supported profiles: A2DP and AVRCP DC input: 5 V / 300 mA Audio output: 3.5 mm stereo jack Battery: 250 mAh Li-Polymer Recharging time: 2.5 hours USB charging cable length: 1 m Audio cable length120 mm Dimensions: 45 mm x 33 mm x 8 mm Net weight: 14 g System requirements Bluetooth enabled audio source (mobile phone, PDA, computer, tablet) with stream music support (A2DP profile)