Black Diamond Storm 500-R vs UCO Firefly Lantern

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

Black Diamond Storm 500-R is the lighter option — 229 g lighter than the UCO Firefly Lantern (67% less weight). If grams matter to you, that is the one to beat.

Spec	Black Diamond Storm 500-R	UCO Firefly Lantern
Weight	111 g · 0.111 kg · 0.24 lb	340 g · 0.340 kg · 0.75 lb
Brand	Black Diamond	UCO
Category	Lighting	Lighting

Black Diamond Storm 500-R

111 g

Rechargeable 500-lumen headlamp with waterproof design.

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UCO Firefly Lantern

340 g

Collapsible candle lantern. Classic camp ambience.

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Black Diamond Storm 500-R vs UCO Firefly Lantern: which should you buy?

If saving weight is your priority, the Black Diamond Storm 500-R wins — at 111 g it is 229 g (67%) lighter than the UCO Firefly Lantern (340 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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