Features: - 100% Brand new and high quality. - Universal Steering Wheel Remote Control. - It is mainly aplicated to wince car radio or android car radio, and control the button for, radio, music or video after study. - Support Various Android/ Wince Car Multimedia Player. - With Mute, Volume and Next/Up button. - 1M Cable conect with SWC key cable of car multimedia player. - Easy to install, after wires connection, enter the SWC interface of car multimedia player, and study the wire connection. Package: 1 x Car Steering Wheel Button Note: - High speed stepper motor with a quick response. - The light of the actual gauge may be slightly different from that shown on the photo,Hope you could understand. Explanation: 1.Open navigation Settings. 2.The navigation square control learning page is displayed. 3.Click the corresponding function in the picture to learn. 4.Press the button on the knob controller. 5.Click Save after learning.