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Black Diamond Cosmo 225 Headlamp

Temporarily Out Of Stock

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Cosmo 225 Headlamp

For urban adventures and overnights in the wilderness, you need a reliable, low-profile way to light up the world around you. Black Diamond updated the Cosmo 225 Headlamp body to be streamlined and super compact, so you'll barely notice its presence as you ride around town or set up camp. Black Diamond also added a secondary switch to this model, which gives you a simple way to flip between settings. And while you can take full advantage of the 225 lumens at your disposal, you can also rest easy knowing you have 200 hours of burn time on the lowest setting, should you find the need for long-lasting light.

  • A compact, basic headlamp for nights in the city or the woods
  • Ergonomic, streamlined design offers low-profile lighting
  • Multifaceted optical lens efficiently disperses light
  • Secondary switch allows you to flip easily between modes
  • Waterproof-tested design at 1 meter for 30 minutes
  • Item #BLD00Y2

Power Source
Batteries Included
proximity, distance, dimming, strobe, red night-vision, lock
[high] 225, [medium] 160, [low] 6
[high] 236ft, [medium] 164ft, [low] 26ft
Burn Time
[high] 6 hours, [medium] 17 hours, [low] 200 hours
Claimed Weight
Recommended Use
cycling, weekend camping
Manufacturer Warranty
3 years

Tech Specs

What do you think about this product?


>Rating: 5


I've used it several times

After using a couple of different headlamps I think I have found the "one". The Cosmo 225 checks all the boxes for me; light weight (2.5oz with lithium batteries), waterproof and comfortable. My only complaint is that the Black Diamond controls/buttons are a little more complicated than others (Petzel) but it's fine once you get used to it. I mainly use it for hiking and running. I definitely recommend replacing the provided alkaline batteries with lithium.

>Rating: 5

Bright light. it's super easy to operate

I've used it several times

I take this light fishing with me on those early morning trips. It is bright enough to get me to my spots while hiking, works well on the boat, and bonus - the red light doesn't scare the fish. I also love that I can adjust the intensity of the light.

>Rating: 5

Perfect and affordable

I've used it several times

I always wanted a good headlamp it is fun and helpful to use at nights at home and obviously in the mountains a night. Black diamond really makes fantastic and durable products that you really cannot go wrong with their stuff.

>Rating: 4

Great lamp, beats my stream light

I've used it several times

Awesome lamp, light, easy to adjust and simple controls. Didn’t use it in wet conditions so I can’t speak on that but it lasted through multiple countries and hikes in different conditions and altitudes. Excited to keep using this around the world and at home.