Side-by-side on the specs that matter, with category winners and an opinionated take to help you decide.
This is a choice between a top-tier dive computer with multisport features and an affordable running-focused GPS watch.
Pick Descent Mk2i if you're a serious diver who also wants a high-end multisport watch for land.
Pick Garmin Forerunner 55 if you're a runner or general fitness enthusiast seeking core tracking without the diving tech.
Ask anything — we'll answer with Descent Mk2i and Garmin Forerunner 55 in mind.
Pindear may earn a commission when you buy through these links. Winners are determined by numeric spec comparisons only; non-numeric features (app quality, ecosystem, real-world feel) are covered in the verdict.
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