Dave X3 is a general purpose surface mount waterproof light with three high-power 500 lumen CREE LEDs. Mount it above or below the waterline, as much as 10' deep. One piece polycarbonate unibody provides strength and ample heat sinking to the LEDs. Their patented internal circuitry provides consistent brightness and makes them immune to life-shortening voltage fluctuations. Their incredibly low power draw (0.4A at 12V) makes them the perfect way to reduce energy consumption. 3 15/16"dia. x 15/16"H.