You'll only need to drill four small holes in your hull or transom to install one of these surface-mount underwater lights.Illuminate the water under and around your boat for nighttime fishing or a dramatic effect for dockside parties. The Dual Color SeaBlaze Quattro LED Underwater Light by Lumitec Lighting features Light Emitting Diodes (LEDs) that operate at a low temperature, use little energy, are vibration-resistant, long-lasting and operate on your boat's DC voltage system. You'll get more than 2,000 lumens with a multi-mode output (different light intensities) that also includes cross fading (as one color fades out, the other color fades in). The marine-grade bronze alloy housing is designed for an underwater service life of more than 50 years and the circuitry is totally self-contained so all you need to do for mounting is drill three small holes for the mounting screws and a 1/2" hole for the power cord.Key FeaturesDual color (white and blue) multi-mode outputCross fading between the colorsWhite light provides 2000+ lumensMarine-grade bronze alloy housing resists corrosionIncludes mounting hardwareInstruction Manual