With four light modes, the L1 offers a bright LED for any use. L1 operates on just 2 AA batteries making it extremely lightweight and comfortable on the trail. Features: Weight: 5.5oz Ouput: 1W Super-bright 1-watt Luxeon™ LED No over-heating with unique circuitry and cooling fins L1 provides 1-watt out to 115 feet for up to 8 hours 2-AA battery operation 85 hours battery life Light distance to 115ft Four light modes beginning with lowest (helps conserve battery life): Power save, bright, ultra-bright and emergency strobe When battery life reaches 15%, headlamp automtically engages into Power Save mode for continuous lighting for an additional 10 hours Brunton L1 1-Watt LED Headlamp L1$59.95 Need more information? Please feel free to contact us at 1-800-592-6940 - Ask for Extension 547 or Internet Sales.