1.Support for iPod mini, for iPod nano, for iPod video, etc.2.Transmit clear stereo audio signals to any receiving device for Bluetooth3.No need to set up any software and very easy to use.4.Support paired stereo headsets /earphones for Bluetooth to control play/pause, forward/backward.5.Support automatism paired (no button).Support automatism standby mode: Standby mode is started to save the power for iPod when the stereo headsets/earphones for Bluetooth are not found in due time. Compatible with 30-pin docksColour:blackMaterial:plasticSize:4 x 4 x 0.8cmPackage Contents:1 x Bluetooth TransmitterOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.