BioLite Range 400 vs Black Diamond Deploy 325 Headlamp
Weight and specs compared for 2026 — and which one to choose.
USB-C rechargeable headlamp with 400 lumens, IP67 rating and fast charging that adds an hour of run time in eight minutes.
Check price Full details →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 →BioLite Range 400 vs Black Diamond Deploy 325 Headlamp: which should you buy?
If saving weight is your priority, the Black Diamond Deploy 325 Headlamp wins — at 40 g it is 35 g (47%) lighter than the BioLite Range 400 (75 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.