Klarus FL1A CREE XP-G2 1A LED Flashlight w/UV+Red+Green LEDS for Signalling & Professional Use & Mini-Carabiner One of smallest AA battery flashlights with multicolour output options Ideal lightweight, portable light for the detection of counterfeit banknotes Single AA Battery- readily available, economical and practical The UV function is shielded for eye protection Special diffuser designed to spread the flashlight beam