BLACK DIAMOND Cosmo 350-R Rechargeable Headlamp – 350 Lumens, Micro-USB, IP67 Waterproof | Octane

Bright, reliable illumination for any outdoor adventure

With up to 350 lumens, the Cosmo 350-R casts a balanced beam that covers close-up tasks and distant trails. The even illumination helps you navigate rocky paths, read maps at camp, and keep pace on night hikes without glare.

Weighing less than a typical headlamp and designed with a low-profile shape, it sits comfortably on your forehead. The adjustable headband stays secure during movement, while the compact form reduces bulk in a pack or on a helmet.

Rechargeable convenience you can rely on

The built-in lithium-ion battery recharges via micro-USB, so you stay powered with one cable on the go. This design supports sustainable use by eliminating disposable batteries over time. The controls are simple: a single button adjusts brightness, mode, and lockout.

• Rechargeable via micro-USB for everyday sustainability
• Single-button interface with dimming, strobe, and red night-vision modes
• Digital lockout to prevent accidental activation in packs or pockets

Versatile modes for different scenarios

Three primary lighting options adapt to your plans. Full brightness lights the trail, dimming helps with late-night map reading, and red night-vision preserves darkness adaptation for wildlife watching or stealthy camping.

• Dim mode for camp tasks and reading maps
• Bright mode for trails and distant features
• Strobe mode for signaling or alerting teammates
• Red night-vision mode to protect night adaptation

Built to brave weather and rugged trails

Featuring IP67-rated housing, the Cosmo 350-R withstands rain, splashes, and brief immersion up to one meter for 30 minutes. After exposure to moisture, be sure to dry it thoroughly to maintain performance.

Rugged reliability shines through the design, from sealed controls to a water-repellent finish that sheds moisture as you move through damp woods or dusty campsites.

Lightweight, low-profile design for extended wear

The headlamp hugs your brow and stays aligned with your line of sight. The slim profile minimizes bulk inside a pack, while the secure headband prevents shifting during runs, climbs, or tent setup.

• Low-profile fit for backpacks, runs, and tent setups
• Adjustable headband for secure, all-night wear

In everyday use, the Cosmo 350-R offers dependable light when you need it most: evening hikes after work, late-night campsite setup, or early morning pre-dawn rituals. Its compact, user-friendly design makes quick setup and teardown a breeze, so you can focus on your outdoor experience rather than the gear.