Designed for the more technical adventurist, the Black Diamond Storm 450 headlamp is the brightest, most waterproof headlamp perfect for extreme environments. Rechargeable and AAA battery compatible means the user won't be stuck in the dark, even when caught away from a power source. Duel-fuel technology for maximum flexibility to utilize either the rechargeable Lithium Ion battery or AAA batteries. BD 1500 Lithium Ion Rechargeable sold separately; includes three AAAs. One QuadPower LED and 1 DoublePower white LED emit up to 450 lumens on max setting. Easy-to-use interface designed to simplify the experience with an easy ON/OFF and a secondary switch to cycle between lenses. PowerTap Technology allows instant transitioning between full and dimmed power. Brightness Memory enables you to turn the light on and off at a chosen brightness without reverting back to full power. Settings include full strength in proximity and distance modes, dimming, strobe, red, green and blue night-vision and lock-off mode. Housing tilts so you can adjust the angle of the beam. Adjustable headband for a secure fit and padding behind the housing for additional comfort. Rated IPX67: Dustproof and waterproof tested to operate at least 3.3 feet (1 meter) underwater for up to 30 minutes. Features a digital lock-out to ensure the headlamp doesn't drain in your pack plus a six-setting, three-LED battery meter.