This adopts advanced high-power ultraviolet LEDs that output pure 365nm ultraviolet light, making it more effective for UV glue curing, ore, stains, pet urine stains, and fluorescent agent detection Equipped with a hard tempered ultra transparent optical glass lens, pure 365nm ultraviolet light produces almost no visible light (when you shine it on the , the visible light you see is fluorescence). The latest electroplating technology, aluminum alloy deep reflection cup, enables you to obtain tight, strong, and distant light . Powered by 2 * AAA batteries (Not included batteries), use the easily available AAA Alkaline battery to meet your daily application needs; Multitask application in profession: such as detecting documents, money verification, forensic science, gasoline inspection, amber and jewelry detection, body fluid detection and fluorescence, attracting certain breeds of fish or hunting and tracking other creatures. Reliability, durability: 1.5 meters impact , to and scratches in harsh environments. Constant current output, constant brightness; Polarity reverse protection can prevent improper insertion of flashlight batteries and adopts IP-65 waterproof grade. Color: Black Material: Aluminum Alloy Package Contents: 1 * UV flashlight Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.