Feature: All functions are set with one small button, by single click, double click, long click...
How to work? Install the light in DC5V car UBS port or adapter ( it better do not use it on power bank, the power bank may be cut off automatically when it can't feel the output of such a small current), it only light up automatically in dark enviornment or when the light sensor hole is fully hided.
Tesla owner please notice: tesla model 3 still has weak current even the engine is off, that is why the light is still working. But it will shut off eventually when your car goes to deep sleep. i suggest you connect tesla company to consult how long will the power storage is fully over of the car.
Function 1:Set fixed color or 8 color in cyclic change. Click the light button lightly, set your favorite color from red/orange/yellow/green/cyan/blue/purple/white.
When you set color in white, to click button, 8 color will be in cyclic change;
Also you can restore setting by short click again if you like fixed color ( color will be switched from red, then you can set your favorite color.)
Function 2: Adjust the brightness brighter or darker by long pressing and release on the button by your preference.
Function 3: Set the brightness in gradient breathing mode by double click . Also you can restore setting by double click again if you like fixed brightness mode.
About after sale: This is a very smart light with multiple setting functions. If you have any question please be free to tell us, we will answer questions for you immediately to figure out the problems.