Professional-grade UV lightg torch produces 365nm(nanometers) ultraviolet wavelengths. 365nm Ultraviolet light is invisible to the naked eyes, so that it is not as BRIGHT as the 395nm torch, but more perfect for detection of high demand like fluorescent agents & security code.UV flashlight 365nm equipped with black filter optical lens that can filter out foreign light from the environment, which makes the ultraviolet light purer.365nm Torch comes with a high capacity rechargeable battery. Tips: Please take away the protect film on the battery before using. Battery charger with battery indication, red for charging, green for fully charged.UV torches case uses high-quality aluminum alloy, which greatly enhanced its heat dissipation performance, this makes 365nm flashlights more reliable and durable. Pocket size UV torch to take it anywhere.Blacklight torch is very practical, which can be used for detecting counterfeit documents, money verification, and jewelry detection, identifying spills of various types of chemicals or fluids, finding scorpions, yooper and amber on the beach, A/C systems leaks.