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Acme Tornado 636 vs Cypher Climbing Mydas Ultra II

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

Acme Tornado 636 is the lighter option — 12 g lighter than the Cypher Climbing Mydas Ultra II (50% less weight). If grams matter to you, that is the one to beat.
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Spec Acme Tornado 636 Cypher Climbing Mydas Ultra II
Weight 12 g · 0.012 kg · 0.03 lb 24 g · 0.024 kg · 0.05 lb
Brand Acme Cypher Climbing
Category Safety Safety
Acme Tornado 636
12 g

Loud pealess emergency whistle. Standard SAR equipment.

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Cypher Climbing Mydas Ultra II
24 g

Ultralight carabiner at 0.85oz with 22kN rating. Wire gate design.

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Acme Tornado 636 vs Cypher Climbing Mydas Ultra II: which should you buy?

If saving weight is your priority, the Acme Tornado 636 wins — at 12 g it is 12 g (50%) lighter than the Cypher Climbing Mydas Ultra II (24 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.

More safety comparisons