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SPOT Gen4 vs Unknown Phantom Carabiner

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

Unknown Phantom Carabiner is the lighter option — 121 g lighter than the SPOT Gen4 (81% less weight). If grams matter to you, that is the one to beat.
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Spec SPOT Gen4 Unknown Phantom Carabiner
Weight 149 g · 0.149 kg · 0.33 lb 28 g · 0.028 kg · 0.06 lb
Brand SPOT Unknown
Category Safety Safety
SPOT Gen4
149 g

One-way satellite tracker with SOS capability.

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Unknown Phantom Carabiner
28 g

Lightweight climbing carabiner at 1oz. Full UIAA certified.

Full details →

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SPOT Gen4 vs Unknown Phantom Carabiner: which should you buy?

If saving weight is your priority, the Unknown Phantom Carabiner wins — at 28 g it is 121 g (81%) lighter than the SPOT Gen4 (149 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 safety page, or browse the full gear weight database.

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