1.Support for mini, for nano, for video, etc. 2.Transmit clear stereo audio signals to any receiving device for Bluetooth 3.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 when the stereo headsets/earphones for Bluetooth are not found time. Compatible with 30-pin Colour:white Material:plastic Size:4 x 4 x 0.8cm Package Contents: 1 x Bluetooth Transmitter Only the above package content, other products are not included. Note: Light 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.