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Black Diamond Cosmo Headlamp 300lmn

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With 300 lumens of power housed in a super compact, watertight body, the Cosmo 300 is perfect for urban adventures and overnighters in the woods.... Read more
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With 300 lumens of power housed in a super compact, watertight body, the Cosmo 300 is perfect for urban adventures and overnighters in the woods. The Cosmo's new, compact body, is more ergonomic with a lower profile for improved balance, and the updated user interface includes a second switch for easy lens selection. In addition, the updated optical efficiency not only provides brighter light, but also saves battery life. And thanks to its watertight construction, the Cosmo keeps lighting the way whether you're forced to bike home in the rain, or you're hiking back to camp in an unexpected downpour.


  • Emits up to 300 lumens on max setting

  • Red night vision has dimming and strobe modes and activates without cycling through the white mode

  • Compact, low-profile design uses three AAA batteries, included

  • Settings include proximity and distance modes, dimming, strobe, red night-vision and lock mode

  • Multifaceted optical lens design

  • IPX8: Waterproof-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; it should be completely dried out after use in wet conditions.

  • Digital lockout feature safeguards against accidental use when stored in a pack or pocket.


  • Batteries 3 AAA (included)

  • IPX Rating IPX 8

  • Lumens 300

  • Max Burntime FL1 4.25 H; reserve 24 H (highest setting), 200 H (lowest setting)

  • Max Distance 75 m (highest setting), 8 m (lowest setting)

  • Weight 2.9 oz (83 g) with batteries