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The UltrAspire Lumen 850 Duo Waist Light is a high-output rechargeable waist light that also clips onto an included head strap, giving you two lights' worth of options from one unit. It is the pick for runners who love waist lighting on the trail but want a headlamp at camp or the aid station.
It suits trail runners, ultrarunners and fastpackers who want versatility without carrying two lights. On the belt, 3D Lighting casts shadows across uneven ground for better depth perception, with high, medium, low, blinking and red modes under a big, easy-to-find button. The ErgoFit Waist belt combines a conical shape, breathable mesh and open-cell foam behind the bracket to wick moisture.
Carry a spare 18650 battery for long nights, or move the light to another UltrAspire belt with the Lumen Light Bracket. Coming from the Lumen 600 5.0? The Duo adds the head strap and a red mode, while the 600 keeps a zippered pocket.