Ultraspire Lumen 850 Duo Waist Light Belt – Lightweight, Water-Resistant

Meet the UltrAspire Lumen 850 Duo Waist Light Belt

The Lumen 850 Duo is a compact, versatile waist light designed to keep you visible and in control during outdoor adventures. Built around an ErgoFit Waist design, it stays comfortably in place without adding bulk, so you can focus on the moment and the terrain ahead.

Design and Comfort

• ErgoFit Waist design sits comfortably on the body for extended wear.
• Open cell foam behind the light bracket helps wick moisture and adds cushioning.
• Sizing range from 26 to 38 inches ensures a secure, adaptable fit.
• Lightweight construction at 3.8 oz (108 g) minimizes fatigue on long outings.

Lighting Performance

• 3D Lighting delivers depth by casting shadows on uneven surfaces, aiding terrain interpretation.
• Five regular modes plus extra high, high, medium, low, and extra low provide flexible output.
• Two red lighting modes help preserve night vision when needed.
• A large, intuitive power button and a battery indicator (green, gold, red) simplify status checks on the go.

Power, Charging, and Durability

• Includes an UltrAspire rechargeable 18650 battery for reliable power.
• USB Type-C charging port with quick charge capability and included charging cable.
• Designed to withstand outdoor use with a water-resistant build and stable ride.
• Widebeam and EnduraLight technologies balance brightness and run time across modes.

Whether worn at the waist or clipped into the headlamp strap for a dual setup, the Lumen 850 Duo offers adaptable lighting that can respond to changing trails, weather, and your pace. The adjustable bracket lets you fine-tune aim, so you can illuminate the path or highlight a map without sacrificing comfort. With its moisture-management foam and a compact, low-profile footprint, this belt light is built to accompany you through chilly dawn runs, misty descents, or starlit campsites. The included USB-C charging and the battery indicator help you stay powered without guesswork, making preparation simpler for weekend adventures or daily workouts. While no single light can guarantee perfect visibility in every situation, the Lumen 850 Duo is designed to be a dependable, flexible option for hands-free illumination in a variety of nighttime contexts.