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.

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...

Check price Full details →

ResQLink PLB-375

135 g

Personal Locator Beacon. Activates free search and rescue.

Full details →

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.

More safety comparisons

Katadyn BeFree AC Water Filter vs Fox 40 Micro Whistle Katadyn BeFree AC Water Filter vs Acme Tornado 636 Katadyn BeFree AC Water Filter vs Black Diamond Oz Screwgate Carabiner Katadyn BeFree AC Water Filter vs Sawyer Squeeze Mini Water Filter Katadyn BeFree AC Water Filter vs Katadyn BeFree 1.0L Katadyn BeFree AC Water Filter vs Katadyn BeFree 1.0L Water Filter