1. Multi Functional Control: Providing a handy control for your car radio, DVD player, and for Android navigation system. No manual operations required, focus more on safe driving. 2. Enhanced Driving Safety: Feasible to keep both hands on the steering wheel and avoid distractions, making the drive much safer and helping you maintain better control over the vehicle and traffic situations. 3. Convenience at Hand: Control your car's multimedia system and navigation right at your fingertips. Listen to your favorite tunes, navigate routes, or watch DVDs without ever taking your hands off the wheel. 4. Wireless Control: With everything connected wirelessly, enjoy peace of mind without the worries of messy wires. The setup is quick, the connection is stable, and the control is seamless. 5. Wide Compatibility: The universal design of this steering wheel control button is compatible with most in car radios, DVD players and for Android navigation systems. Suitable for a variety of car models. Item Type: Wireless Control Steering Wheel Buttons Applicable Models: Universal Fit Power Supply Mode: Built in rechargeable battery Battery: 180mAh lithium battery (Built in) Duration on a Single Charge: 3-6 months (depending on frequency of use) Maximum Control Distance: 8-12m/26-39ft (depending on battery level) Lossless Installation: Yes Operating Temperature: -20°C-70°C How to Use: 1. Please uninstall and take out the car player that needs to be installed, and turn off the car key. 2. Please connect the black {GND} and red {ACC} with the main harness of the car player. 3. Connect the brown KEY1 and brown black KEY2 of the IR to the wiring harness of the car player, respectively KEY1/SWC1/AD1 and KEY2/SWC2/AD2. 4. Insulate the connection of the connected OK line. 5. Plug the car player