The super-versatile Black Diamond Cosmo Headlamp delivers the brilliance needed to light up base camp and beyond. Its single switch activates three modes for short- and long-distance illumination. At maximum, two single-power LEDs and one double-power LED emit a powerful 55-lumen beam. On double power, beam reaches out to 33 meters and runs for up to 175 hours. On single power, beam illuminates out to 18 meters and runs up to 250 hours. Its Dim control lets you adjust to your lighting need. Compact design seals out water from any angle. Runs on three AAA batteries (included). Weight with batteries: 3.17 oz. Available: Dark Shadow, Black, White(not shown), Plum.