The 365nm UV light is invisible to the naked eye, so not as bright as a 395nm flashlight, but more suitable for demanding detections such as fluorescent agents and security codes. Reminder: Please explain your requirements before ordering. Professional grade UV flashlight mineral produces a UV wavelength of 365nm. This is a true dedicated detection spectrum that can be used in natural light, works best in the dark, and has virtually no visible light leakage. Zoom in or out to adjust the appropriate lighting range. Expand the beam to outline suspicious areas and zoom out to mark pet urine. The body is made of aluminum alloy which is strong, durable and long lasting. 365nm mini torch powered by 1 x AA battery or 1 x 14500 battery Size: 10 x 2.4cm Lightweight handheld black light for finding minerals, scorpions and insects, document verification, counterfeit or counterfeit art, money detection, document verification, security inspection documentation