Feature:1. Support various for Android /for wince car multimedia player with steering wheel control function.2. USB rechargeable battery, long service life, it can be used for 68 months after a full charged.3. 5m/16.4ft long transmission distance, 1W low power consumption, it has stable performance.4. The installation is simple and does not require complicated operations, convenient for using.5. Built to meet standard specification, strictly follow factory quality control.Specification:Item Type: Steering Wheel ButtonMaterial: ABSColor: As picture shownPower: 1WVoltage: 3-5VSNR: 96dBTransmission Distance: Approx. 5m/16.4ftBattery: Polymer Rechargeable Battery .Package List:2 x Steering Wheel Remote Button 2 x Silicone Case 1 x Controller 1 x USB Charging Cable 1 x Tape