One-Min Install: Simply preand hold for 60 seconds the included triple strength 3M adhesive pad to any plastic, metal, or glasurfaceEspecially for a ceiling mount in a moving golf cartNo tool, screws or nuts are requiredNote: Make sure that the surface is dry and smooth before sticking. Easy to Operate: Has three switches (TOUCH/OFF/10MIN), or One short touch to the center of the light for ON/OFF, long touch for brighter and dimmer, it super safe to operate the light while driving the cartIt can remember your last brightnesetting, no need to adjust every time and save time for you. USB Rechargeable LED light: The roof LED lights built-in 600mAh lithium batteryIt is rechargeable and compatible with power bank, computer USB port or mobile phone chargerLast 4 hours in full brightest and up to 8 hours when dimming is engaged and it can last up to 20,000 hours. Super Bright LED Bulbs: our golf cart roof light with 5 LED bulbs inside, it is bright enough when you operate your gol