A blacklight (or often black light), also referred to as a UV-A light, Wood's lamp, or simply ultraviolet light, is a lamp that emits long-wave (UV-A) ultraviolet light and not much visible light.[1][2][3][4] One type of lamp has a violet filter material, either on the bulb or in a separate glass filter in the lamp housing, which blocks most visible light and allows through UV,[3] so the lamp has a dim violet glow when operating.[5][6] Blacklight lamps which have this filter have a lighting industry designation that includes the letters "BLB".[3][5] This stands for "blacklight blue", which is a contradiction in that they are the type that does not look blue. A second type of lamp produces ultraviolet but does not have the filter material, so it produces more visible light and has a blue color when operating.[3][4][5] These tubes are made for use in "bug zapper" insect traps, and are identified by the industry designation "BL". Description *Feature: Deep Reflector *Light Range:100meters *LED Emitter: LED UV Beam *Lamp Life:100000hours *Powered by : 1x18650 Battery (Not include) *Switch:Tail Switch *Contruction: waterproof and shakeproof ,Excepte diving *Material: Aluminum.
