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Don't leave home without it.

Throw the small and powerful Black Diamond Cosmo Headlamp in your backpack, pocket, or car, and don't be caught in the dark again. DoublePower LED lights up the night for long-range viewing, and two SinglePower LEDs maximize battery power while providing proximity lighting for reading or cooking at basecamp. Compact, lightweight, and easy to operate, this little lamp is an ideal light source if you're counting ounces or need a reliable backup headlamp.

  • LED light source
  • Proximity, distance, strobe, and red night vision modes
  • AAA alkaline, lithium, or Black Diamond rechargeable (sold separately)
  • 250 hour run time on lowest setting, 43 hour on highest
  • 1 lockable button
  • Tilt adjustment and customizable beam
  • Adjustable headband
  • IPX 4 splash protection
  • Three-level power meter

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Black Diamond Cosmo Headlamp

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Here's what others have to say...

5 5

Light the way.

  • Familiarity: I've put it through the wringer

The Cosmo Headlamp is one item that I always make sure to take on any kind of adventure. I love using it for night climbing and biking and have never had any issues with it. Small and compact it isn't hard to just keep in the car or in a backpack and is easy to adjust. For the price it is a great headlamp. Always good quality with Black Diamond.

Light the way.
4 5

Awesome Headlamp for a Killer Price

  • Familiarity: I've put it through the wringer

The Cosmo is an awesome headlamp for trail running, camping, ski touring,etc. I really like the red light feature for reading at night (so I don't blind my tent mate). The lock feature is also great for hiking during the day when your headlamp is buried at the bottom of your pack. Nothing is more frustrating than not realizing your light has been on all day and the battery is low or dead. The strobe light feature would be great for emergency situations. Being able to dim the headlamp easily with my finger is also super easy and convenient. The only reason I give this light 4 stars is that I find the light to seem a little fuzzy and out of focus at times.

5 5

Doesn't get much better for $25

Black Diamond has always been my go-to for headlamps.
When my old headlamp kicked the bucket, I knew I could count on BD as a replacement.

For the current $24 price, it's hard to beat. A red light, and two different "white" lights make it a perfect choice for any camper or climber.

I don't really need anything special out of a headlamp besides reliability, and you can certainly find that with any BD product