Easy to convert a system of Bluetooth speakers to all dock connector with 30-pin for iPod / for iPhone / iPad Compatible with any host system that works with the for iPhone 4 / 4S, the iPad (3) and the forelimbs with 30-pin dock connector Compatible with Bluetooth 2.0, supports A2DP V1.2 Compatible with Bluetooth devices, the wireless transmission of music (A2DP) Can drive devices via the for iPod Dock. Color: black and white Material:Metal + Plastic Package Content: 5 x adapter Apple for iPod , for iPhone , or iPad are registered trademarks of Apple, Inc. Products are Apple compatible and not endorsed by Apple, Inc. Only the above package content, other products are not included. Note: Light reflection 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.