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Flextail Zero Power 5k vs Suunto Core All Black
Weight and specs compared for 2026 — and which one to choose.
Suunto Core All Black is the lighter option — 5 g lighter than the Flextail Zero Power 5k (6% less weight). If grams matter to you, that is the one to beat.
Flextail Zero Power 5k
85 g
Lightweight USB-C power bank with dual ports. At 85g, it's the lightest UL battery pack on the market.
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Flextail Zero Power 5k vs Suunto Core All Black: which should you buy?
If saving weight is your priority, the Suunto Core All Black wins — at 80 g it is 5 g (6%) lighter than the Flextail Zero Power 5k (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 electronics page, or browse the full gear weight database.
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