Between the Enduro 3 and Grit X2 Pro, the Enduro 3 comes out ahead in gps mode and smartwatch mode, while the Grit X2 Pro wins on ecg. Overall, the Enduro 3 scores 78.2 and the Grit X2 Pro scores 42.6 on our Mars Score.
Which should you buy?
The Enduro 3 is the clear pick on raw spec strength, leading by 35.6 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 Enduro 3 if you care most about gps mode and smartwatch mode. The biggest gaps in its favor are gps mode, smartwatch mode, solar charging.
Pick the Grit X2 Pro if you care most about ecg. Its strongest claims are ecg.
Both ship with comparable multi-band gps, so those specs don't separate the two — focus on the differences below.
Bottom line: the Enduro 3 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Garmin - Enduro 3 wins
- ▲GPS mode — 644.19% more. 320 h vs 43 h.
- ▲Smartwatch mode — 260.00% more. 36 days vs 10 days.
- ▲Has Solar charging.
Why Polar - Grit X2 Pro wins
- ▲Has ECG.
Spec comparison
GPS & Sensors
| Spec | Garmin - Enduro 3 | Polar - Grit X2 Pro |
|---|---|---|
| Multi-band GPS | true | true |
| Barometric altimeter | true | true |
| Heart rate | true | true |
| ECG | false | truelead |
| Pulse Ox | true | true |
Battery
| Spec | Garmin - Enduro 3 | Polar - Grit X2 Pro |
|---|---|---|
| Smartwatch mode | 36 dayslead | 10 days |
| GPS mode | 320 hlead | 43 h |
| Solar charging | truelead | false |
Design
| Spec | Garmin - Enduro 3 | Polar - Grit X2 Pro |
|---|---|---|
| Case size | 51 mmlead | 47.5 mm |
| Weight | 63 glead | 79 g |
| Water resistanceⓘ | 10 ATM | 10 ATM |
Spec-level deep dives
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