Features: 1.Easy to install and remove, no complicated tools required, convenient for using. 2.Powered by built?in battery with ultra low power consumption. The battery can be used for about 1?2 years. 3.Suitable for most DVD navigation with direction control function on the market. 4.Universal controller, you don't need to remove the original steering wheel controller to use it. 5.Support 5 buttons and 10 buttons _x000D_ _x000D_ two choices to meet the common operation needs of the car. 6.Super touch design, small space occupation and side buttons will not cause wrong operation through the steering wheel. 7.Integrated curved design, perfectly compatible with a variety of automotive steering wheels, without adversely affecting the steering wheel cover. 8.Being flexibly installed along the steering wheel as you like, this controller is easy to use and helpful to keep safety for your driving. Specification: Condition: Brand New_x000D_ Item Type: Steering Wheel Remote Control_x000D_ Material: ABS_x000D_ Color: Black_x000D_ Shape: Half Moon _x000D_ Controller Button Size(L x W x H): Approx. 10 x 4.4 x 3.5cm/3.9 x 1 .7 x 1.4in_x000D_ Receiver Box Size (L x W x H): Approx. 8.5 x 4cm/3.3 x 1.6in_x000D_ Battery: Built-in 2 x Button Battery (CR2032) Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.