Cosmo 350 Headlamp

Engineered for multi-day backpackers, trail trekkers, and alpine adventurers needing reliable lighting in dynamic environments, the Black Diamond Cosmo 350 Headlamp strikes the perfect balance between high-efficiency optics and compact construction. Its dual-lens configuration provides both focused distance lighting and a wide proximity floodlight to handle high-speed movement or camp chores effortlessly. Powered by standard AAA batteries or the rechargeable BD 1500 Li-ion battery pack, it ensures fail-safe illumination through heavy monsoons, freezing mountain conditions, and remote Himalayan trekking trails. Visit our website, Makalu e-traders, or our physical store in Thamel.

Cosmo 350 Headlamp Features

• Dual-Fuel Technology: Flexible power architecture compatible with 3 AAA alkaline cells (included) or the rechargeable BD 1500 Li-ion battery pack.

• 350-Lumen Maximum Output: Multifaceted optical lens system designed to project up to 350 lumens of bright, balanced light.

• Red Night-Vision Mode: Dedicated red LED setting with dimming and strobe modes to preserve night vision without blinding trail partners.

• Intuitive Dual-Switch Interface: Easy-to-use button configuration for toggling modes, adjusting dimming levels, and controlling night vision.

• Brightness Memory: Smart internal memory that turns the light on and off at the previously chosen brightness level.

• Digital Lockout Mode: Electronic safety lock preventing accidental battery discharge while stowed inside a backpack.

• Recycled Elastic Headband: Comfortable skin-friendly headband constructed with Repreve recycled fiber materials.

Technical Specifications

• Weight (Without Batteries): 46 g

• Weight (With AAA Batteries): 79 g

• Weight (With BD 1500 Battery): 73.5 g

• Maximum Light Output: 350 lumens

• Medium Light Output: 175 lumens

• Low Light Output: 6 lumens

• Maximum Beam Distance (High): 75 m

• Medium Beam Distance: 45 m

• Low Beam Distance: 8 m

• Max Burn Time (AAA High): 3 hours (FL1 Standard to 10% remaining)

• Max Burn Time (AAA Low): 200 hours

• Power Source: Dual-Fuel (3x AAA Alkaline included OR BD 1500 Rechargeable Li-ion battery sold separately)

• Housing Material: Sealed high-impact polycarbonate enclosure

• Headband Material: Repreve recycled elastic webbing

• Water & Dust Protection Rating: IP67 (Dustproof and fully submersible to 1m for 30 minutes)

• Compliance & Standards: ANSI FL-1 Standard, CE Certified, RoHS compliant