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Black Diamond Astro 300 Headlamp vs Black Diamond Deploy 325 Headlamp

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

Black Diamond Deploy 325 Headlamp is the lighter option — 5 g lighter than the Black Diamond Astro 300 Headlamp (11% less weight). If grams matter to you, that is the one to beat.
Spec Black Diamond Astro 300 Headlamp Black Diamond Deploy 325 Headlamp
Weight 45 g · 0.045 kg · 0.10 lb 40 g · 0.040 kg · 0.09 lb
Brand Black Diamond Black Diamond
Category Lighting Lighting
Black Diamond Astro 300 Headlamp
45 g

Ultralight 300-lumen headlamp at only 45g. Compact waterproof design with single AAA battery; perfect for thru-hikers minimizing base weight.

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Black Diamond Deploy 325 Headlamp
40 g

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...

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Black Diamond Astro 300 Headlamp 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 5 g (11%) lighter than the Black Diamond Astro 300 Headlamp (45 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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