For superior hands-free illumination in every situation, count on the Vizion® I. Remarkably lightweight and waterproof for use in the most challenging climates and conditions. Safety certified for use in hazardous locations. Compound Path Optics (CPO) permits high efficiency and compact size. Thermal recovery system recycles heat from the LED to warm batteries for improved performance in low temperatures. High impact ABS, LEXAN® and molded rubber construction for durability. Select from three beam patterns: spot, diffuse, and red diffuse. High and low power settings. Large push button control switch works with heavy gloves. LED lamp module can be removed from mounting strap for use a portable work light. Rotating beam angle adjustment. Comes with a non slip rubber helmet band. Powered by 3 “AAA” alkaline batteries (included). Burn time: 65 lumens/13 hours (high); 35 lumens/17 hours (low). Beam distance: 197′ (high) 127′ (low). Weight: 3.9 oz. Size: 3″ long x 1.5″ wide x 1.8″ high.