365nm ultraviolet light is invisible to the naked eye, so that it is not as BRIGHT as the 395nm flashlight, but more perfect for detection of high demand like fluorescent agents & security code. 365nm UV is the real dedicated detection spectrum.
395-400nm UV LED blacklight. Portable UV LED Flashlight. 1 × UV LED Flashlight. Waterproof and shock-resistant design. Compact and lightweight.