Welcome to our store! 1. Easy to install and remove, no complicated tools required, convenient to use. 2. Powered by built-in ultra-low power consumption battery. The battery can be used for about 1-2 years. 3. Suitable for most DVD navigations with direction control function on the market. 4. Universal controller, you don't need to remove the original steering wheel control to use it. 5. Supports 5 buttons and 10 buttons two choices to meet the car's common operation needs. 6. Super touch design, small space requirement and side buttons will not cause incorrect operation via the steering wheel. 7. Integrated curved design, perfectly compatible with a variety of car steering wheels, without negatively affecting the steering wheel cover. 8. This controller is flexibly installed along the steering wheel as you wish, easy to operate and helps maintain safety during your driving. Item Type: Steering Wheel Remote Control Material: ABS Color: Black Shape: Half Moon Control Button Size (L x W x H): Approx. 10 x 4.4 x 3.5 cm / 3.9 x 1.7 x 1.4 inches Receiver Box Size (L x W x H): Approx. 4.3 x 3.7 x 1 cm / 1.7 x 1.45 x 0.45 inches Battery: Built-in 2 x button batteries (CR2025) 2 x Controllers 1 x Receiver Box 1 x Connection Cable 1 Pack of Screw and Nut Your 100% satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!