Weighing less than three ounces, the Aurora headlamp is lightweight, compact and waterproof. Powered by 3 AAA batteries, the three high output L.E.D.s are configured in a unique triangular configuration, providing an extremely even beam of light that keeps shadows to a minimum. The adjustable pivoting head allows you to shine light where you need it, and the durable ultra-light head strap provides plenty of adjustment for the perfect fit. The electronically controlled switch system provides easy switching between (3) levels of light output offering burn times from 50-160 hours, as well as (2) blinking/emergency signaling modes. With its extreme versatility and contemporary design innovations, the Aurora is the perfect choice for camp set-up, trekking, climbing, adventure racing and emergency signaling situations Specifications: Batteries: 3 AAA Alkaline Bulb: 3 Ultra Bright White L.E.D.s Burn Time: 50 - 160 Hours Weight: 2.7 Oz. Includes: Includes AAA Alkaline Batteries, Free Pulsar with every purchase