BRIGHT LED and UV LIGHT: You can see objects clearly in dark or insufficient light conditions with this dual LED light source. Has UV light for Counterfeit Identification of Paper Currency, Passports, Paintings, Geology Study. It requires 3 LR1130 batteries (Batteries are Included). 40X HAND LENS: Illuminated jeweler loupe is built from durable metal with an optical grade glass, it has an authentic diopter glass lens that shines daylight bright light without any glare and magnifies up to 40x magnification power with no smearing and blurring on the images.