Features : 1. Support FOR Android/Wince car multimedia players2. Mute, volume and /previous program (music, video, radio, ...)3. sticker / to fix on the car steering wheel4. 1M line to connect the car multimedia player SWC key line5. Easy to install, enter the SWC interface of the car multimedia player after wiring, learn wiringnotes: 1. This product is not a portable remote control and cannot be used with any tablet, home TV or car headrest, roof monitor... . It just acts as a control button on the steering wheel of the car.2. This product can be used with FOR wince car radio or android car radio. If your car radio has steering wheel controls, our products work, after learning the buttons to control radio, music or video.3. If your car radio does not have steering wheel control function, please do not buy it, our products cannot be used.Usage steps1. Open navigation settings2. Enter the navigation control learning interface3. Click on the corresponding function in the diagram to learn.4. Press the button on the controller5. After learning, click SaveMaterial: plasticcolour: blackPackage Contents: 1 x Car Multi-function Steering Wheel Control Button HandleOnly 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.