NU21, ULTRA LIGHTWEIGHT Dual Beam Outdoor Headlamp 360 Lumens, 44g Advanced Headlamp, Perfect Choice for Pro Trail Runners Extreme Simplicity Design We strive for lightweight in every detail, aiming to provide lighter headlamps for our users. PC Material: Lighter, more durable and more resistant to low temperatures Hollow Bracket: Specially designed for easing the burden Ultra Lightweight Headband: Zero sense of weight Unimaginable Lightweight Only 44g, enables to wear for a long time without sense of weight User-Friendly and tailor-made For alerting pedestrians and vehicles, guarding your safety at night with Reflective and Glow in the dark material 360 Lumens, Blazing Output Utilizing a unibody optical lens system with light transmission of over 94% and high performance LEDs, it is specially designed for reflecting a uniform and soft light ideal for night running and route finding. Red Light ideal for map viewing, emergency response, stargazing, wildlife observation, night photography and more. Whats in the box: NU21 Headlamp Headband USB C cable Specifications: Max Output 360 Lumens Max Beam Distance 58 m Max Beam Intensity 840 cd Max Runtime 37 h 0 m / 1.54 d Battery Built-in 500mAh Li-ion Battery Special Modes Location Beacon, SOS Beam color White Light, Red Light Dimensions 60.1mm x 33mm x 25.5mm (2.37″ x 1.30″ x 1.00″) Weight 44 g / 1.55 oz Feature Dual Output, Rechargeable Activity Outdoor/Camping, Trail Running