Looking at the specs, it appears that the ACR ResQLink is a little bit smaller and lighter and is more expensive. The FastFind 220 appears to have a six year battery life instead of a five year battery.
Neither float. When paddling, I keep my PLB in one of my PFD pockets and also secured by an inexpensive detachable camera lanyard.
PFD's (Life Jackets)
Cartop Kayak Carriers
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