BLACK DIAMOND Cosmo 350 LED Headlamp — Waterproof, Dimmable, Dual-Power Options

Introducing the BLACK DIAMOND Cosmo 350 LED Headlamp

Designed for night-loving explorers, the Cosmo 350 blends compact weight with a strong, focused beam. With dual power options and a rugged, submersible build, this headlamp is built to handle camping trips, trail runs, and late-night endeavors where hands-free lighting matters.

Power that adapts to your outing

Out of the box, the Cosmo 350 runs on three AAA alkaline batteries. For longer sessions, you can switch to the optional BD 1500 Li‑Ion battery (sold separately) to stretch burn times without changing light quality. The design supports both power sources seamlessly.

• Brightness settings: Low, Med, and Max
• Red LED mode for night vision and wildlife awareness
• Lock mode to prevent accidental button presses during activities

In practice, you’ll see a spectrum from subtle, energy-saving glow to a high-contrast beam that reaches tens of meters depending on mode and battery choice. The lamp provides a reserve level that helps you plan ahead for longer outings.

Performance you can rely on outdoors

With IPX8 water protection, the Cosmo 350 is prepared for rain, splashes, or creek crossings. It weighs a total of 79 grams when you include the battery, keeping it light on your head during long excursions. The dual switches offer quick access to modes, and a battery meter keeps you informed as the night wears on.

• Max beam reaches up to about 65 meters for long-range visibility
• Med beam around 45 meters for balanced field and efficiency
• Low beam optimized for endurance and close tasks

Versatile for a range of nighttime activities

Whether you’re camping, hiking, running after dusk, or managing a campsite setup, the Cosmo 350 aims to support your needs without overpromising results. The red light preserves your night vision and respects others’ comfort, while the white beam helps you navigate uneven terrain with confidence.

Quality, warranty, and sustainability

Built for durability and reuse, this headlamp carries a three-year warranty and ships in recyclable packaging. It’s CE listed and RoHS compliant, reflecting BLACK DIAMOND’s commitment to reliable outdoor gear.