HDE's purple Ultra Violet Flashlight Blacklight Light Torch Lamp comes with a UV 12-LED bulb that spreads a brightness of 395-400mm. The mini flashlight measures 97 millimeters long, 30 centimeters in diameter, and is waterproof. It can sustain up to 395 nanometers under water. Its adjustable focus controls how sharp the light is projected. Handheld, the flashlight is easy to carry while searching for bugs and hunting for scorpions.