Nitecore NU21 vs Nitecore NU25 UL 400
Weight and specs compared for 2026 — and which one to choose.
Ultralight USB-C rechargeable headlamp with 360-lumen white and auxiliary red beams, built for running and minimalist hiking.
Check price Full details →Ultralight 48g headlamp with 400-lumen max output and dual red-light modes. USB-C fast charging, IP66 rated. Excellent balance of weight, brightness, and batter...
Check price Full details →Nitecore NU21 vs Nitecore NU25 UL 400: which should you buy?
If saving weight is your priority, the Nitecore NU21 wins — at 44 g it is 4 g (8%) lighter than the Nitecore NU25 UL 400 (48 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest lighting page, or browse the full gear weight database.