The high-performance Fenix HP05 headlamp incorporates modern technology and creative design for a user-friendly, hands-free lighting option. Using 3 AA batteries, the HP05 quick-release battery case is attached to the rear of the head strap for balance and easy access. The four brightness levels range from 350 lumens on turbo power with a beam-throwing range of 400 feet to an energy-saving 4 lumens which runs for up to 170 hours at this setting. A digitally regulated output feature allows the headlamp to maintain a constant brightness level over the life of the batteries. The red light and SOS modes, 60- degree tilt mechanism, water resistance, and tough aluminum alloy construction make the HP05 headlamp a perfect choice for the avid, night-time adventurer.