Free Shipping on Orders Over $50 - Some Exclusions Apply*
  • 1-855-461-8660

  • Live Chat with a Gearhead

  • 100% Guaranteed Returns

Spend 100 Get 20 CreditsSpend 100 Get 20 Credits


Don't let darkness end your day. Keep going with Black Diamond's Cosmo Headlamp

Do you ever leave your headlamp behind to save weight? With the 1.6oz Black Diamond Cosmo, you'll never be caught in the dark again. This compact headlamp uses three SuperBright LEDs inside a tiltable body to light the way when your day in the outdoors runs into overtime. Powered by three AAA batteries in the front housing, the Cosmo even has a removable headband for times when you need a light, but don't need it strapped to your head.

Share your thoughts

Review Summary
23 4
2 3
1 2
0 1

What do you think of the

Black Diamond Cosmo Headlamp

? Share a...

Write a review

No file chosen

Rather attach a photo from another website?

Rather attach a photo from your computer?

  • Product review:
  • Share a video
  • Share a photo

How familiar are you with the product?(Optional)

Invalid filetype.


Here's what others have to say...

5 5

good :)

it's easy to use. it is perfect bright for this price. I used it on a rainy day and its still working.

5 5

Love it!

  • Familiarity: I've used it once or twice and have initial impressions

Easy to use. Bright & light weight. Perfect for what I need it for and would recommend this light to friends.

5 5


Simple,easy,adjustable, not too many options,small, lite, comfortable, and not expensive. This light definitely doesn't suck. Ken

4 5

excellent little light

Its light, bright and simple, perfect for around camp and in the tent. exactly what i was looking for.

excellent little light
5 5

Awesome and cheap

This thing is great! I also have a Petzl Tikka Plus and generally use this lamp more. I just love the dimmer feature on it! You hold down the button and it dims way down and then eventually brightens back up to full power. So rad vs. just two lighting settings. Granted if you get the Petzl battery pack you can customize more, but certainly not on the go. Great especially for someone like me who wants to read my guidebook in the tent while my girlfriend is right next to me sawing logs.

5 5

works good

this is my first headlamp and I use it all the time, cant complain about this one at all.

5 5


At first I was bummed that it didn't have a red filter. I like to have a red filter as to not annoy my co-workers in the field. This thing is super bright. What I really enjoy about it is the range of the dimmers. It goes from a primal scream to a soft whisper.....I dig it!!

5 5

Our go-to lights.

Light, bright and very good battery life. Great head lamp for your money. Haven't tested how waterproof it is but it is cheaper than my bomb-proof PT EOS.

5 5

great headlamp

great headlamp - use for many things

3 5

Cosmo Headlamp

  • Gender: Male
  • Familiarity: I've used it several times

Sweet little headlamp. Super bright and compact. Feels a little cheap but it was.

5 5

Great Headlamp

  • Gender: Male
  • Familiarity: I've used it several times

Great all around headlamp!

5 5

Simple, Functional

  • Gender: Male

This headlamp is awesome and does everything you need. It is a one button control, very light, and really bright for its size. If you're simply looking for a headlamp for hiking, climbing, or setting up camp at night, this is the way to go.

5 5

simple, but effective

  • Gender: Male
  • Familiarity: I've put it through the wringer

I'm super happy with this headlamp.

5 5

For the price, its amazing

  • Gender: Male
  • Familiarity: I've used it several times

This lamp far exceeded my expectations. Much more powerful then I thought. I originally bought this to throw in my pack just-in-case, but after using it a few times im very pleased with it. Its just as powerful as my $50 lamp and significantly less. The overall quality of the elastic is not great but overall I would recommend this lamp.

5 5

Bright, Bright Headlamp

  • Gender: Male
  • Familiarity: I've put it through the wringer

The first thing I noticed when using this was how bright the light was! My first time using it was rock climbing in St. George at night. It not only lit up in front of me, but allowed everyone around me to see their gear and avoid the scorpions that come out to play at night!

5 5

All you Need

This light provides you with all of the light that you need in a compact light weight unit. in a campground, you will have one of the brightest lights amongst all of the other lights. if you need more then use a large flashlight.

batteries tend to run quite long in the unit due to its efficiency. so long in fact that one should replace every so often or run the risk of the battery case cracking out the acid and ruining the light's electronics.

5 5


Couldn't ask for more, this little headlamp is perfect for the campsite or some evening hiking. Durable and bright, it has lasted me many adventures.

5 5

Great design

The dimming feature works great. All round great light.

View all contributions... Be patient, it might take a while.