The VIPER XL cap light is the premier cap light in the hunting industry today, featuring: BRIGHTEST MAIN BEAM AVAILABLE BRIGHTEST WALKLIGHT AVAILABLE (4 times brighter than previous models) BRIGHTEST RED AVAILABLE BRIGHTEST LASER W/ NIGHT TRACE TECHNOLOGY Specifications: 9-10 hours of burn time on brightest position - best in the market! 250 hours burn time on low position. Weighs 21-24 oz depending on cap selection. Brightest red in the industry. Industry leading 4 positions of brightness on red, walklight, and main beam. Most powerful GREEN laser on market today.