Specifications:Bluetooth V2.1 technology.Need not setup any software and very easy to use.Support profile: A2DP u0026 ARVCP.Support paired bluetoothcompatible stereo headsetsearphones to control playpause,forwardbackward.Support automatism paired (no button).Support paired pin code: 1234, 0000, 8888.Range of frequency: 2.42 to 2.480 GHz(SIM) spectrum.Support automatism standby mode: standby mode is started to save power when the stereo bluetoothcompatible headsetsearphones is not found in due time.Support for iPhone, for iPod mini, for iPod nano, for iPod video, etc.Compatible with 30pin dock.Type: bluetoothcompatible TransmitterMaterial: ABSRange of Frequency: 2.42 to 2.480GHz( SIM) SpectrumWorking Current: 40mA(M