Ultrafire Waterproof UV Torch Light Aluminium alloy Body Model WF-502B Torch  (Black, 13.5, Rechargeable)

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.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, so the lamp has a dim violet glow when operating. Blacklight lamps which have this filter have a lighting industry designation that includes the letters "BLB". 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. 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:100 meters *LED Emitter: LED UV Beam *Lamp Life:100000 hours *Powered by : 1x18650 Battery (Not include) *Switch:Tail Switch *Construction: waterproof and shakeproof ,Except diving *Material: Aluminum.