Side-by-side on the specs that matter, with category winners and an opinionated take to help you decide.
This is a choice between the Instinct 2S's rugged tactical DNA and the Forerunner 165's streamlined, data-rich running focus.
Pick Instinct 2S - Standard Edition if you need a virtually indestructible tool for fieldwork, tactical use, or extreme environments.
Pick Garmin Forerunner 165 if your 'pro' life centers on structured running training and you want a dedicated, modern running watch.
Ask anything — we'll answer with Instinct 2S - Standard Edition 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.
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