Specifications:<br> Bluetooth V2.1 technology.<br> Need not setup any software and very easy to use.<br> Support profile: A2DP & ARVCP.<br> Support paired bluetooth-compatible stereo headsets/earphones to control play/pause,forward/backward.<br> Support automatism paired (no button).<br> Support paired pin code: 1234, 0000, 8888.<br> Range of frequency: 2.42 to 2.480 GHz(SIM) spectrum.<br> Support automatism standby mode: standby mode is started to save power when the stereo bluetooth-compatible headsets/earphones is not found in due time.<br> Support for iPhone, for iPod mini, for iPod nano, for iPod video, etc.<br> Compatible with 30-pin dock.<br> Type: bluetooth-compatible Transmitter<br> Material: ABS<br> Range of Frequency: 2.42 to 2.480GHz( SIM) Spectrum<br> Working Current: 40mA(Max)<br> Distance: 10 Meters<br> Size: 9cm x 6cm x 1cm/3.54inch; x 2.36inch; x 0.39inch; (Approx.)<br> Notes:<br> Due to the light and screen setting difference, the item's color may be slightly different from the pictures.<br> Please allow slight dimension difference due to different manual measurement.<br> Package Includes:<br> 1 x bluetooth-compatible Transmitter