Black Diamond Cosmo 300 Headlamp

Black Diamond  |  Item: 71673.02
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Product Details

From dawn patrol trail runs and evening commutes to early camp chores and late night groover trips, the Black Diamond Cosmo 300 Headlamp sets a new standard for value and advanced technology in a sleek, full-featured package emitting up to 300 lumens of light.
  • Low-profile body is designed to be more ergonomic to improve balance.
  • Settings include full strength in proximity and distance modes, dimming, strobe, red night vision and lock-off mode.
  • Red night vision has dimming and strobe modes and activates without cycling through the white mode.
  • Housing tilts to adjust the angle of the 300-lumen beam of light.
  • Updated user interface includes an easy mode switch and the updated optical efficiency provides brighter light and saves battery life.
  • Easily track battery life with the six-setting, three-LED battery meter.
  • Elastic headband adjusts for a secure fit and features padding behind the headlamp housing for additional comfort.
  • Rated IPX8: Tested to operate at least 1.1 meters underwater for 30 minutes. If submerged, water may enter the battery compartment and it will still operate. Dry completely after use in wet conditions.
  • Powered by three alkaline AAA batteries (included).

More Information


  • Headlamp
Lumens: 300
Burn Time on Low: 200 hours
Burn Time on Medium: 17 hours
Burn Time on High: 6.5 hours
Type of Battery:
  • 3 - AAA alkaline
Weight (with batteries): 2.9 oz (83 g)
Batteries Included: Yes
  • Distance: 8m - 74 m
  • Red Night Vision, Dimming, Strobe Modes
  • IPX8 - Waterproof up to 1.1 meters for 30 mins
  • Adjustable headband
  • Lock-off feature
  • 3-year warranty