Go any where with the Black Diamond Storm 450, the headlamp that is ready for anything. Switch between rechargeable BD 1500 Li-ion batteries or standard AAA cells—whatever keeps you moving forward. Built tough, with a reinforced alloy battery clip that locks securely against the elements, this headlamp features excellent weatherproofing to provide powerful illumination in the most demanding conditions. Whether you're wading a river at three in the morning, or setting up camp in a blizzard, the Storm 450 gives you the versatility and dependable performance serious adventurers demand. Features Dual-Fuel: Maximum flexibility to utilize either the rechargeable Lithium Ion BD 1500 battery (purchased separately) or Alkaline cells (included). 450 Lumen max output. IP67: Waterproof-Tested to operate at least 1.0 meters underwater for 30 minutes. PowerTap™ Technology allows instant transitioning between full and dimmed power. Brightness Memory allows you to turn the light on and off at a chosen brightness without reverting back to default setting. Settings include full strength in proximity and distance modes, dimming, strobe, red, green and blue night-vision, and lock mode. Multifaceted optical efficiency lens technology. Improved durable alloy battery housing clip to ensure a water and dust proof seal. Specifications Max Brightness 450 lumens Battery Options 4 x AAA alkalinesBD1500 (1500mAh Li-Ion - sold separately) Weight 120 g w/ batteries Run Time High: 5 hrs, Low: 150 hours, Reserve: 150 hours Beam Distance High 100 mLow 9 m Water Resistance IPX67 (Waterproof to 1.0m)