Black Diamond Spot 400-R Headlamp vs Fenix HL18R-T

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

Fenix HL18R-T is the lighter option — 43 g lighter than the Black Diamond Spot 400-R Headlamp (51% less weight). If grams matter to you, that is the one to beat.

Spec	Black Diamond Spot 400-R Headlamp	Fenix HL18R-T
Weight	85 g · 0.085 kg · 0.19 lb	42 g · 0.042 kg · 0.09 lb
Brand	Black Diamond	Fenix
Category	Lighting	Lighting

Black Diamond Spot 400-R Headlamp

85 g

Rechargeable 400-lumen headlamp with multiple modes including red night vision. USB-C charging with IPX8 waterproof rating.

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Fenix HL18R-T

42 g

Ultralight 500-lumen rechargeable headlamp for trail running.

Full details →

Black Diamond Spot 400-R Headlamp vs Fenix HL18R-T: which should you buy?

If saving weight is your priority, the Fenix HL18R-T wins — at 42 g it is 43 g (51%) lighter than the Black Diamond Spot 400-R Headlamp (85 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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