Amazfit T-Rex 3 vs Garmin Forerunner 965
Amazfit T-Rex 3 (42 h GPS, 68 g) vs Garmin Forerunner 965 (31 h GPS, 53 g). Side-by-side spec comparison: battery, weight, maps, multi-band GPS and price. Which GPS watch should you buy?
AmazfitAmazfit T-Rex 3Ultra-rugged outdoor watch with dual-band GPS, offline maps and a 2,000-nit AMOLED display, at a mid-range price. 42 h in maximum-accuracy mode and up to 27 days in daily use. Military standard, 100 m water resistance and onboard music. Garmin Instinct-style toughness for far less.
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GarminGarmin Forerunner 965Premium running watch with a 1.4" AMOLED display, onboard topo maps, multi-band GPS and music. Up to 31 h in GPS mode (19 h multi-band) and 23 days in smartwatch mode, at just 53 g. Garmin's top running watch without the bulk of a Fenix: ideal for marathons and single-day ultras with accurate navigation.
View on AmazonSpec-by-spec comparison
| Spec | Amazfit T-Rex 3 | Garmin Forerunner 965 |
|---|---|---|
| GPS battery | 42 h | 31 h |
| Multi-band battery | Yes | 19 h |
| Smartwatch | 27 days | 23 days |
| Weight | 68 g | 53 g |
| Maps | ✓ | ✓ |
| Multi-band | ✓ | ✓ |
| Music | ✓ | ✓ |
| Display | AMOLED | AMOLED |
| Price | Entry | High-end |
GPS battery = each manufacturer's standard GPS mode; multi-band = dual-frequency (maximum accuracy). On Suunto, Polar Grit and Amazfit T-Rex the GPS figure already corresponds to dual-band mode. Figures verified against the manufacturer.
Verdict
For maximum autonomy on long ultras, Amazfit T-Rex 3 lasts longer in GPS mode. If you want the lightest watch on your wrist, go for Garmin Forerunner 965. On budget, Amazfit T-Rex 3 is the more affordable option.