Black Diamond's ultra-versatile, IPX4, USB-rechargeable Revolt headlamp runs on the modular new rechargeable BD 1800 Battery or standard AAA batteries. The redesigned ReVolt 350 now is now lighter, brighter, and smaller, boasting 350 lumens of light, an updated user interface, and a multi-faceted optical lens design that saves battery life. Now running on the new modular BD 1800 rechargeable battery, the Black Diamond ReVolt 350 is a powerful, versatile and rechargeable headlamp that has now been fully redesigned. Now producing 350 lumens of light, we’ve also updated the user interface by adding a second switch for easy lens mode selection. In addition, the improved optical efficiency provides brighter light with more peak intensity, and you can track the battery life with a six-setting, three-LED battery meter. The ReVolt 350 easily spots anchors while you rappel in the dark while its proximity lighting gives you a large area of light for hiking down the trail. Brightness Memory gives you the option to set the light's brightness when first turned on, plus PowerTap Technology makes for instant brightness adjustment settings. The ReVolt 350 can run on standard AAA batteries in addition to the included BD 1800 Battery. Features and Specifications Emits 350 lumens on max setting Sleek, low-profile design uses new BD 1800 Rechargeable mAh Lithium Ion Battery (included) or standard AAA alkaline batteries Brightness Memory allows you to turn the light on and off at a chosen brightness without reverting back to full power "PowerTap™ Technology allows instant transitioning between full and dimmed power Multifaceted optical lens design Settings include full strength in proximity and distance modes, dimming, strobe, red night-vision and lock mode IPX4: Storm proof—Tested to withstand rain and sleet from any angle. Dual-Fuel: Maximum flexibility to utilize either the rechargeable lithium ion BD 1800 Battery or Alkaline cells. BD 1800 Battery Weight With Batteries : 90 g (3.2 oz) Max Distances : [High] 82 m (alkaline)[Low] 8 m (alkaline) Max Burn Time : [High] 4 H (alkaline)[Low] 200 H (alkaline) IPX Rating : x4 LED Type : 1 TriplePower, 1 DoublePower, 1 DoublePower Red Batteries : 3 AAA or BD 1800 Black Diamond ReVolt Rechargeable Headlamp - 350 Lumens