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Model Number:

The sleek, compact Black Diamond Cosmo sets a new standard for value and advanced technology, combining a powerful DoublePower LED for long-range viewing with 2 SinglePower LEDs for proximity lighting.

Colors and Weight

  • Matte Black
  • Dark Chocolate/Red
  • 54g (1.9 oz) without batteries
  • 90g (3.2 oz) with batteries


DoublePower LED
Setting Brightness
Burn Time
Max 55 lumens 40m 50 hours
Min 4 lumens 5m 175 hours

2 SinglePower LEDs
Setting Brightness
Burn Time
Max 16 lumens 15m 90 hours
Min 4 lumens 5m 250 hours
  • DoublePower LED coupled with 2 SinglePower LEDs
  • Ultra compact batteries-in-the-front design uses 3 AAA batteries (included)
  • Positron switch activates 3 modes plus dimming
  • Protected from splashing or water spray at any angle (IPX4 water-resistant)

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Customer Reviews

Comments: I had this light for one winter and now for my second winter its on the fritz and the light wont shut off, turns on automatically, and  fluxuates between light intensities. For an expensive light its junk and will never buy this brand again. Wish paid twice as much and gotten a better light such as the ones my UltraMarathon runners use.
From: Mike, Bandon, OR, USA