Garmin Instinct 3 Solar 50 mm vs Polar Grit X2 Pro
Garmin Instinct 3 Solar 50 mm (60 h GPS, 60 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?
GarminGarmin Instinct 3 Solar 50 mmUltra-rugged GPS watch with solar charging: up to 40 days in smartwatch mode (unlimited with sun), 60 h GPS and 34 h multi-band. Military-standard case, LED flashlight and dual-frequency GPS. For those who prioritise toughness and battery over onboard maps on their mountain outings.
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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 | Garmin Instinct 3 Solar 50 mm | Polar Grit X2 Pro |
|---|---|---|
| GPS battery | 60 h | 43 h |
| Multi-band battery | 34 h | Yes |
| Smartwatch | 40 days | 10 days |
| Weight | 60 g | 64 g |
| Maps | – | ✓ |
| Multi-band | ✓ | ✓ |
| Music | – | – |
| Display | MIP | AMOLED |
| Price | Mid-range | 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, Garmin Instinct 3 Solar 50 mm lasts longer in GPS mode. If you want the lightest watch on your wrist, go for Garmin Instinct 3 Solar 50 mm. Only Polar Grit X2 Pro brings onboard topo maps for navigation. On budget, Garmin Instinct 3 Solar 50 mm is the more affordable option.