The Black Diamond Cosmo 350-R Headlamp is a rechargeable headlamp for all-purpose use such as home, camp, and outdoor adventure. When the sun stops shining, a little bit of light goes a long way. Even longer when it's attached to your head and you have full use of your hands. At maximum output, the 350 lumens are bright in the night, while additional settings help dial in your needs in uses. Whether you're dimming to save battery power, strobe to bring attention, or utilizing the red LED to save your night vision, this headlamp will aid in leading the way. The IP67 rating offers a waterproof testing to operate at least 1.0 meters underwater for 30 minutes. Juuust in case you find yourself in the water or rain.