Specifications Is Batteries Included:Yes Hign-concerned Chemical:None Item Weight:0.08kg Item Height:3cm Item Width:8.5cm Item Length:12.5cm Color Name:black Origin:Mainland China Item Type:REMOTE CONTROLS 10 Keys Wireless Steering Wheel Remote Control:For Car Radio DVD GPS Multimedia Universal Bluetooth Wireless Car Steering Wheel Control Button:10 keys Luminous Remote Control Navigation Head Unit:1Pair Universal Bluetooth Wireless Car Steering Wheel Control Button 10 keys Luminous Remote Control For Radio DVD GPS Multimedia Feature: Flexible buttons: It has 10 buttons that can be set as function buttons according to your needs. It can easily handle operations such as answering calls and listening to music, making it easy for users to control. Wide range of applications: It is a universal product and is suitable for most vehicles equipped with DVD navigation direction control. Easy installation: It helps to improve driving safety, and the installation process is simple and does not require complex tools, which can save users' time and energy. Built-in battery power supply: It has the advantage of ultra-low power consumption and strong battery life, which can be used for one to two years. Night use: It has an LED backlight design, which is convenient for use at night. Specification : 1. Support Various Android / Wince Car Multimedia Player 2. 10 key controllers - Mute , Volume , and Next/up program ( Music, video, Radio,bluetooth,GPS ... ) 3. Wireless Remote valid distance: 10M ; Voltage supply:3-5V 4. Easy installation , after wires connection, enter the SWC interface of car multimedia player ,and study the wire connection Package list : 2 x Controller Key 1 x Receiver Box 2 x 3M Sticker 1 x User Manual