QAWACHH Steering Wheel Controller Universal Button Key Remote, Universal for car Round Multipurpose Controller

Specification: 1) With easy installation and removal, you can install it anywhere along your steering wheel. 2) All the functions are easy to be set on the controller when you enter the key learning mode in the factory setup menu of your head unit 3) Being flexibly installed along the steering wheel as you like, this controller is easy to use and helpful to keep safety for your driving 4) Firstly 3 wires of the receiver should be connected with the head unit(black to black, red to red, white to the steering wheel control wire, and the longest wire as antenna doesn't need to be connected.) ( BATTERY ARE NOT INCLUDED )