T-Rex 3 vs Garmin Forerunner 165
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 budget-friendly fitness tracker with smart features and a dedicated running watch from a sports tech leader.
Pick the Amazfit T-Rex 3 if you want a rugged, affordable smartwatch that handles notifications and basic activity tracking.
Pick the Garmin Forerunner 165 if you're a runner or cyclist who prioritizes advanced workout metrics and training guidance.
- —The T-Rex 3 offers longer battery life and durability, while the Forerunner 165 provides superior GPS accuracy and sport-specific analytics.
- —Garmin's ecosystem excels for structured training and recovery insights, whereas Amazfit focuses on everyday value and smartwatch convenience.
- —The Forerunner 165 has a more refined sports-first interface, but the T-Rex 3 often includes features like music storage at a lower cost.
Full specs
Ask anything — we'll answer with T-Rex 3 and Garmin Forerunner 165 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.