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The sleek, compact Black Diamond Cosmo sets a new standard for value and versatility. The updated Cosmo combines a powerful DoublePower LED at 90 lumens for 50m of long-range viewing, with 2 SinglePower LEDs for proximity lighting. A handy dimming feature lets you quickly customize the amount of light you need on-the-run.

Colors and Weight

  • Dark Shadow (DKSH)
  • Yellow (BLYL)
  • 54g (1.9 oz) without batteries
  • 90g (3.2 oz) with batteries


TriplePower LED
Setting Brightness
Burn Time
Max 90 lumens 50m 43 hours
Min 4 lumens 8m 150 hours

2 SinglePower LEDs
Setting Brightness
Burn Time
Max 16 lumens 15m 90 hours
Min 4 lumens 8m 150 hours
  • Single TriplePower LED and 2 SinglePower LEDs
  • White light settings: full strength in proximity and distance modes, dimming, strobe and lock
  • Red night vision mode has proximity and strobe settings; activates without cycling through the white mode
  • 3-level power meter shows remaining battery life; displays for 3 seconds once headlamp switched on
  • Dimming feature allows you to customize amount of light by holding down power button
  • Sleek, low profile design uses 3 AAA batteries
  • Protected from splashing or water spray at any angle (IPX4 water-resistant)

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