Dry battery led UV flashlight

Specifications: 1. Light, exquisite, easy to carry 2 Waterproof(dont put it into water) 3 Ultra bright, electricity-saving 4 Your logo can be customized Overview of dry battery led UV flashlight Part of dry battery led UV flashlight Functions of dry battery led UV flashlight 1. Chargingf luorescent materials: UV torches will charge "glow in the dark" materials almost instantly. Useful for night fishing, camping etc. 2. Document and forgery analysis: UV light can sometimes show alterations and erasures to documents. Alterations or changes will sometimes become directly visible when illuminated by UV light. 3. Crowd and access control: Often access to events is controlled using an invisible mark on a hand or card that when illuminated with UV becomes visible (fluoresces). Instead of carrying around heavy and hot black lights, this UV LED penlight can be slipped into a pocket. 4. Crime scene inspection: Some bodily fluids will fluoresce under UV light. Law enforcement agencies use to inspect crime scenes to detect blood + other bodily fluids and many other things that are not visible to the human eye under normal light conditions. Some people even inspect their hotel sheets before use to see if the beds have been changed. Arson investigators use UV to search for the presence of accelerants.