Features:- The UV lamp comes with high light intensity， stable and reliable quality.- Using glass encapsulation and nickel plated alloy shell for the Ultraviolet， improve the light-emitting efficiency of Ultra Violet，reduces the attenuation and prolong the service life of Ultraviolet.- The flashlight can be used to detect counterfeiting money， counterfeit cigarettes， fakes， fake train tickets， fake cell phone，brand cosmetics with anti-counterfeiting watermark or anti-counterfeiting trademarks and detect fluorescence material. Specifications:- Flashlight type: 501B- Light source: UV LED Flashlight- Quantity: 1pcs- Modes: 1 mode- Working voltage: 3.7V-4.2V- Wave Length: 395-410nm- Lifespan: More than 100，000 hours- Lighting range: Within 50 meters- Body Color: Black- Size: 136mm (length) * 32mm (head diameter) * 20mm (bottom diameter)- Net Weight: 90g- Power Source: 1 x 18650 Battery (Do not include)Note: Please do not put it directly to people's eyes， the powerful light is harmful and it will make you blind temporarily.  Package Included:1 x Ultraviolet 501B Flashlight (Do not include battery)