Features:1.Safe driving: Wireless steering wheel controller, provides ultimate precision and accuracy to ensure your safety and bring you the greatest convenience during the driving2. Easy connection: This steering wheel controller fit for all DVD GPS Navigation System Player that has steering wheel study functions3.This controller is universal, you don't need to remove the old steering wheel control to make it work4.It can support 5 buttons and 10 buttons two choices to meet the common operations of the car5.Its Super touch design, small space occupation and side button will not cause the wrong operation by steering the wheel6.Integrated arc design is perfectly compatible with a variety of car steering wheels, without bad affect to the steering wheel cover7.It is applicable to most of the DVD navigation with direction control function market8.It is powered by built in batteries with ultra low power consumption, the batteries can be used for about one year to two years9.Being flexibly installed along the steering wheel as you like, this controller is easy to use and helpful safety for your driving10.Easy installation and removalSpecifics:Item type: Remote controlsItem length: 3.9''Item weight: 0.15kgItem width: 1.7''Item Height: 1.3''Product name: Steering wheel remote controlColor: BlackMaterial type:ABSBattery: with built-in button batteryShape: Half MoonTips:1.The receiver box should straighten up and approach the steering wheel2.Pay attention to the receiver box connection, don't connect the positive and negative poles of the power source to the wrong direction3.When start operation, you need press the button for more than 0.5 seconds, improving its recognition ability