LED docking lights draw significantly low power while producing a bright output. Perform like a true "docking light" instead of a narrow-beam headlight. White LED light stays cool to the touch. The rubber gasket provided creates a barrier that protects your hull from water entry, ensures the light is watertight, and keeps all electrical components fully sealed. Low profile, long-lasting lights are designed to be surface-mounted and are easy to install. No hole saw needed. 4-1/2"L x 2-13/16"W x 1-1/4"H.