The BLACK DIAMOND Cosmo 225 Headlamp is a safe and smart choice to bring with you just in case. It is compact, easy to stash, and bright enough to light the way down unexpected rappels and dark trails. With updated optical efficiency, it offers 175 lumens of light and a longer battery life, and Black Diamond even gave it water resistant housing for those emergencies that happen in inclement weather. Headlamp. LED bulb. Compact, low-profile design is easy to stash in your pocket or pack. Three adjustable modes: Full Strength, Dimming, and Strobe. Brightness memory retains your last setting. 3 AAA batteries (included). Water resistant. Maximum brightness: 175 lumen. Maximum burn time: 8 hours. Maximum distance: 35 meters. Stormproof housing can handle rain and snow. Weight: 2.8 oz. Imported.