The Monster Dual Illumination Flashlight, No. MST10100UV, features a front end LED with 100 lm output and a side light that projects UV beam to identify counterfeit documents and A/C leaks. The flashlight includes a smart task light mount with a built-in magnet and hook for hands-free operation. The UV LED and Cree White LED flashlight operates with one 3x1.5V AAA alkaline battery (included) and is water resistant.