Black Diamond Cosmo 350-R Headlamp

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Compact, water-tight and rechargeable, the Black Diamond Cosmo 350-R headlamp provides an all-purpose, 350-lumen beam and a red light function to light up the night at home or on the trail.

  • Features

    • Light is powered by an integrated 1500 mAh lithium-ion battery that recharges via a micro-USB charge port
    • Settings include dimming, strobe, red LED night vision, and lock mode
    • White LED emits up to 350 lumens on max setting, 175 lumens on medium and 6 lumens on low
    • Red LED night vision has dimming and strobe modes, and is quickly activated with the dual-button interface
    • Multifaceted optical lens design
    • Integrated battery meter display shows the percentage of power remaining so you know when to recharge the battery
    • Digital lockout feature prevents accidental use when stored in a pack or pocket as a backup
    • Recycled elastic headband features comfortable next-to-skin REPREVE® fiber construction
    • With a waterproof rating of IP67, this light is fully submersible and dustproof, meaning it's completely sealed and won't be phased if you're caught out in the rain


    View all Black Diamond LED Headlamps
  • Technical Specs

    Best Use



    Bulb Type


    Bulb Detail

    1 white / 1 red

    Red Light Mode


    Beam Type


    Max Light Output (Lumens)

    350 lumens

    Light Output

    High: 350; medium: 175; low: 6 lumens

    Max Beam Distance (m)

    64 meters

    Beam Distance

    High: 64; medium: 45; low 10 meters

    Brightness Levels




    Average Run Time

    High: 5; medium: 10; low: 225 hours




    Integrated rechargeable 1500 mAh lithium-ion


    5 x 4 x 2 inches

    Water-Resistance Rating


    Weight With Batteries

    2.65 ounces


    Contains recycled materials

  • Reviews
    19 reviews with an average rating of 4.5 out of 5 stars

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