Dual Light Mode Functionality. Features both HIGH and LOW Light Output Modes LED Color: White Lumens: High - 150 ; Low - 18 Run Time: High 1 hour 10 minutes ; Low 60 hours Effective Range (up to): 443 ft (135 m) Battery Type: 2-AA Alkaline batteries included High-Powered energy efficient 70,000 hour LED Patented optical system, precision machined aluminum reflector with thermal management interface Aerospace-grade aluminum with high grade anodized finish Water-resistant construction and O-Ring seals 3 Position End-Cap Switch activates constant and momentary high and low as wellas a lockout mode Dimensions (Length x Diameter): 5.84" (14.83 cm) x .861" (2.19 cm); 1.1" (2.80 cm) head diameter Weight: 5.43 oz. (154 g) Limited lifetime warranty