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Black Diamond Deploy 325 vs Nitecore NU25 UL 400

Weight and specs compared for 2026 — and which one to choose.

Black Diamond Deploy 325 is the lighter option — 8 g lighter than the Nitecore NU25 UL 400 (17% less weight). If grams matter to you, that is the one to beat.
Spec Black Diamond Deploy 325 Nitecore NU25 UL 400
Weight 40 g · 0.040 kg · 0.09 lb 48 g · 0.048 kg · 0.11 lb
Brand Black Diamond Nitecore
Category Lighting Lighting
Black Diamond Deploy 325
40 g

Minimalist compact headlamp at just 40g. 325 lumen max output with single-button operation. Folds flat for easy stashing in hip belt pockets.

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Nitecore NU25 UL 400
48 g

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...

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Black Diamond Deploy 325 vs Nitecore NU25 UL 400: which should you buy?

If saving weight is your priority, the Black Diamond Deploy 325 wins — at 40 g it is 8 g (17%) 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.

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