Black Diamond Cosmo 225 Headlamp

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Featuring a lighter, smaller, tighter waterproof body with an updated user interface, the Black Diamond Cosmo 225 headlamp illuminates your evening bike commute and your weekend backpacking trip.

  • Features

    • Compact, low-profile design uses 3 AAA batteries; batteries included
    • Settings include proximity and distance modes, dimming, strobe, red night vision and lock mode
    • Red night vision has dimming and strobe modes, and activates without cycling through the white mode
    • Multifaceted optical lens design
    • IPX8: waterproof-tested to 1.1m underwater for 30 min.
    • If submerged, water may enter the battery compartment and it will still operate; it should be completely dried out after us in wet conditions


    View all Black Diamond LED Headlamps
  • Technical Specs

    Best Use


    Bulb Type


    Bulb Detail

    1 LED

    Red Light Mode


    Beam Type

    Flood / Spot

    Max Light Output (Lumens)

    225 lumens

    Light Output

    High: 225; med: 160; low: 6 lumens

    Max Beam Distance (m)

    72 meters

    Beam Distance

    High: 72; med: 50; low: 8 meters

    Average Run Time

    High: 6; med: 17; low: 200 hours

    Regulated Output



    3 AAA

    Water-Resistance Rating


    Weight With Batteries

    2.9 ounces

  • Reviews
    56 reviews with an average rating of 4.8 out of 5 stars

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