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 driving 2. Easy connection: This steering wheel controller fit for all DVD GPS Navigation System Player that has steering wheel study functions 3.This controller is universal, you don't need to remove the old steering wheel control to make it work 4.It can support 5 buttons and 10 buttons two choices to meet the common operations of the car 5.Its Super touch design, small space occupation and side button will not cause the wrong operation by steering the wheel 6.Integrated arc design is perfectly compatible with a variety of car steering wheels, without bad affect to the steering wheel cover 7.It is applicable to most of the DVD navigation with direction control function market 8.It is powered by built in batteries with ultra low power consumption, the batteries can be used for about one year to two years 9.Being flexibly installed along the steering wheel as you like, this controller is easy to use and helpful safety for your driving 10.Easy installation and removal Specifics: Item type: Remote controls Item length: 3.9'' Item weight: 0.15kg Item width: 1.7'' Item Height: 1.3'' Product name: Steering wheel remote control Color: Black Material type:ABS Battery: with built-in button battery Shape: Half Moon Tips: 1.The receiver box should straighten up and approach the steering wheel 2.Pay attention to the receiver box connection, don't connect the positive and negative poles of the power source to the wrong direction 3.When start operation, you need press the button for more than 0.5 seconds, improving its recognition ability