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Katadyn BeFree AC Water Filter vs ResQLink PLB-375

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

Katadyn BeFree AC Water Filter is the lighter option — 70 g lighter than the ResQLink PLB-375 (52% less weight). If grams matter to you, that is the one to beat.
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Spec Katadyn BeFree AC Water Filter ResQLink PLB-375
Weight 65 g · 0.065 kg · 0.14 lb 135 g · 0.135 kg · 0.30 lb
Brand Katadyn ResQLink
Category Safety Safety
Katadyn BeFree AC Water Filter
65 g

0.1-micron hollow fiber filter integrated into a collapsible soft flask. 1,000L lifespan, fast flow rate. New AC version adds activated carbon filtration for im...

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ResQLink PLB-375
135 g

Personal Locator Beacon. Activates free search and rescue.

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Katadyn BeFree AC Water Filter vs ResQLink PLB-375: which should you buy?

If saving weight is your priority, the Katadyn BeFree AC Water Filter wins — at 65 g it is 70 g (52%) lighter than the ResQLink PLB-375 (135 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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