365NM INVISIBLE LIGHT-365nm light is invisible to the naked eye, so that it is not as BRIGHT as the 395nm flashlight, but better for detection of high demand like fluorescent agents & security code. Warm tips: Please clear your needs before ordering. LIGHT ON A DIFFERENT LEVEL ENTIRELY- 365nm light is the real dedicated detection spectrum. It can be used in natural light and performs better in the dark with little visible light leak.