Features:Wide picture.Easy to install.Use the built-in 500mAh rechargeable battery.Remote control: Total 3 buttons, each button is equipped with an indicator light. Taillight: a switch button, a red warning light and a yellow LED indicator light.Taillight operation method:1.Push open the back of the cover of the taillight rubber charging port and insert the micro connector USB charging cable to charge.2. Press and hold the taillight switch button until the LED flashes, then press the control button to correct the code. Then it can be installed, and later3.Combine the taillight and controller with the corresponding fittings and put them in the corresponding position.Package include:1x remote controller1x USB cable1x rear light