Amazfit T-Rex 3 vs Polar Grit X2 Pro
Amazfit T-Rex 3 (42 h GPS, 68 g) vs Polar Grit X2 Pro (43 h GPS, 64 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.
View on Amazon
PolarPolar Grit X2 ProPolar's adventure multisport watch: 1.39" AMOLED display with sapphire, dual-frequency GPS and full-colour offline topo maps. 43 h of battery in training mode and MIL-STD-810H military standard. Top-tier recovery and training metrics for demanding trail and outdoor use.
View on AmazonSpec-by-spec comparison
| Spec | Amazfit T-Rex 3 | Polar Grit X2 Pro |
|---|---|---|
| GPS battery | 42 h | 43 h |
| Multi-band battery | Yes | Yes |
| Smartwatch | 27 days | 10 days |
| Weight | 68 g | 64 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, Polar Grit X2 Pro lasts longer in GPS mode. If you want the lightest watch on your wrist, go for Polar Grit X2 Pro. On budget, Amazfit T-Rex 3 is the more affordable option.