Descent Mk2i vs Garmin Forerunner 165
Side-by-side on the specs that matter, with category winners and an opinionated take to help you decide.
This choice pits Garmin's rugged, feature-rich dive computer against its streamlined, fitness-focused running watch.
Pick Descent Mk2i if you are a technical diver who needs subsurface navigation and air integration for professional dives.
Pick Garmin Forerunner 165 if you are a land-based athlete who wants a lightweight, GPS-running-first watch for daily training.
- —Descent Mk2i is built for underwater pressure but is bulkier for daily wear.
- —Forerunner 165 prioritizes run metrics and battery life over dive or sailing modes.
- —Mk2i offers ABC sensors and mapping the 165 lacks for terrestrial navigation.
Full specs
Ask anything — we'll answer with Descent Mk2i and Garmin Forerunner 165 in mind for pro use.
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.