Looking for black lights for your fishing boat? This is a high output waterproof black light, and it will cause white and light-colored items to glow ("fluoresce.") Black light is frequently used for: Halloween decorations, amusement parks and haunted houses, artistic purposes, such as illuminating artwork with bright white, hot pink, yellow and lime green detecting counterfeit currency and driver licenses, curing plastic resins; therapeutic and diagnostic medical uses, attracting insects.  Ultraviolet 400nm led strip is also known as near ultraviolet, Ultraviolet Type "A" (400-315nm) long wave, or black light led strip. When illuminated UV led strip light will emit some visible violet light.  However, do not judge the brightness of this strip with your eye, as a large portion of the light output from the uv strip is invisible to the human eye.