Gerber Infinity Ultra Task LED Flashlight, Silver #22-80011 Indestructible superbright LED buld emits a blinding 30 foot beam Patented circuit booster provides superior luminosity and burn time from one economical and widely available AA battery Circuit is coated with epoxy for extra durability and protected by two-orings for a waterproof seal (to 10') Equipped with one AA battery that generates up to 100 hours of burn time 3x.75x.75