Item Type: Remote Controls Support Various / Wince Car Multimedia Player Mute , Volume , and /up program ( Music, video, Radio,bluetooth ... ) connect with SWC key cable of car multimedia player Easy installation , after wires connection, enter the SWC interface of car multimedia player ,and study the wire connection colour:black Material:plastic size:82*30*20mm Cable:1M Package Contents: 1* car steering wheel audio controller Tips : The product is not a remote controller , and can not work any PC , Home TV , or car headrest , roof mount monitor ... . it just work the function as steering wheel control button. The product can work with wince car radio , or car radio with steering wheel control function , and control the button for bluetooth , radio , music or video after study 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.