Amazfit T-Rex 3 Pro (48mm)

Flagship materials, maps and 38 h of dual-band GPS for $399 — with clumsy map downloads. At $399.99, Amazfit's 2025 model sits among the cheapest we cover — the GPS Running Watches we compare run from $249 to $1,199.99. It scores 7.6/10 overall, calculated from published specifications across 8 categories rather than from a subjective impression.

Its strongest showing is Display at 9.5/10 — brightness, resolution and daylight readability, weighing AMOLED sharpness against MIP's always-on-for-free behaviour.. The weakest is Build & Comfort at 6.4/10, which is the trade-off to weigh before buying: if that is the specification you care about most, one of the alternatives below will serve you better.

Worth knowing before you buy: maps must be picked and downloaded region-by-region in the Zepp phone app then transferred — reviewers describe the process as messy and poorly documented; and the 85 h battery headline is the power-saving GPS mode; the dual-band mode you would actually race on is 38 h. Every specification on this page comes from Amazfit's own documentation or a verified retail listing — where a figure is not published, the table says so rather than estimating it.