Black Diamond

Black Diamond Cosmo 350 Headlamp

Our Price: $34.95
For purchase only, no demo reservations available
Product Highlights
  • Dual-Fuel Power Supply
  • 350 Lumen max output
  • Red night light
  • Digital battery life display

Don't Get Left In the Dark, Get a Cosmo 350!

The Black Diamond Cosmo 350 Headlamp is the perfect multi-use lighting solution for camping, outdoor adventures, and everyday use around the house.

With its all-purpose beam and night vision mode, you'll be able to see clearly no matter what the situation.

The headlamp is lightweight and comfortable to wear for extended periods of time, and the adjustable strap ensures a secure fit.

The Cosmo 350 also has the added benefit of being able to run on alkaline batteries, making it the ideal choice for long backpacking trips where access to a power source may be limited.

Don't get caught in the dark without the Black Diamond Cosmo 350 Headlamp.

Details & Specifications

Size Range:


Power Source:

3 AAA alkaline batteries (included) or BD1500 rechargeable 1500mAh li-ion battery (not included)


79g (3 AAA)
73.5g (BD1500)
46 g (Without batteries)

Max Lumen Output:

350 Lumens

Max Distance:

High: 64 m
Medium: 45 m
Low: 10 m


Yes: IPX8 - Waterproof for 30 mins in 1 meter of water

Additional Features:

Settings include dimming, strobe, red night-vision and lock mode

Red LED night vision has dimming and strobe modes

Dual-button interface

Multifaceted optical lens design

IPX8: Waterproof-Tested to operate at least 1.1 meters underwater for 30 minutes

Integrated battery meter display shows % of power remaining

Digital lock mode feature safeguards against accidental use when stored in a pack or pocket

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Multifaceted optical lens design
Multiple settings for dimming, strobe, red night-vision and lock mode
Includes 3 AAA alkaline batteries
More Information
Gender All
MSRP $34.95
Size 1 Size
Activity Backcountry Skiing, Mountain Trekking/Hiking, Mountaineering, Trail Running, Camping
Equipment Type Accessories
Fit N/A
Gear Category Accessories
Brand Black Diamond
Shipping Highlights

Shipping Notes:

  • Free Shipping for All Purchases Over $75
  • Expedited Shipping Options Available for All Purchases
  • 30 Day Returns For Purchases of New Items

To see more information regarding Shipping, Returns and Cancellations please see our full policy here.

Black Diamond
About Black Diamond

At Black Diamond it's all about climbing and skiing. They share the same experiences that you do on rock, ice and snow and these experiences push them to make the best gear possible for a worldwide family of climbers and skiers. What began with a backyard anvil and a hammer has now grown into a global company with offices on three continents. Black Diamond is a company that's not just for rock climbers and skiers, but one that stands for the spirit of the sports we live, their values and goals, past, present and future. Since 1957, their innovative gear designs have set the standard in numerous areas. This is partly the result of dedication, desire and diligence on the part of an incredible team of people. It's also a product of the fact that each member of BD are climbers and skiers themselves.

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