Black Diamond Deploy 325 Headlamp vs Nitecore NU21
Weight and specs compared for 2026 — and which one to choose.
Ultra-compact 40g headlamp with 325-lumen output. Folds flat for easy storage in a pocket or pack lid. USB-C rechargeable. Best-in-class weight for a capable tr...
Check price Full details →Ultralight USB-C rechargeable headlamp with 360-lumen white and auxiliary red beams, built for running and minimalist hiking.
Check price Full details →Black Diamond Deploy 325 Headlamp vs Nitecore NU21: which should you buy?
If saving weight is your priority, the Black Diamond Deploy 325 Headlamp wins — at 40 g it is 4 g (9%) lighter than the Nitecore NU21 (44 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.