Between the Grit X2 Pro and Race, the Grit X2 Pro comes out ahead in ecg, while the Race wins on gps mode and smartwatch mode. Overall, the Grit X2 Pro scores 42.6 and the Race scores 50.6 on our Mars Score.
Which should you buy?
The Race is the clear pick on raw spec strength, leading by 8.0 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Grit X2 Pro if you care most about ecg. The biggest gaps in its favor are ecg.
Pick the Race if you care most about gps mode and smartwatch mode. Its strongest claims are gps mode, smartwatch mode.
Both ship with comparable multi-band gps, solar charging, so those specs don't separate the two — focus on the differences below.
Bottom line: the Race is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Polar - Grit X2 Pro wins
- ▲Has ECG.
Why Suunto - Race wins
- ▲GPS mode — 179.07% more. 120 h vs 43 h.
- ▲Smartwatch mode — 20.00% more. 12 days vs 10 days.
Spec comparison
GPS & Sensors
| Spec | Polar - Grit X2 Pro | Suunto - Race |
|---|---|---|
| Multi-band GPS | true | true |
| Barometric altimeter | true | true |
| Heart rate | true | true |
| ECG | truelead | false |
| Pulse Ox | true | true |
Battery
| Spec | Polar - Grit X2 Pro | Suunto - Race |
|---|---|---|
| Smartwatch mode | 10 days | 12 dayslead |
| GPS mode | 43 h | 120 hlead |
| Solar charging | false | false |
Design
| Spec | Polar - Grit X2 Pro | Suunto - Race |
|---|---|---|
| Case size | 47.5 mm | 49 mmlead |
| Weight | 79 glead | 83 g |
| Water resistanceⓘ | 10 ATM | 10 ATM |
Spec-level deep dives
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