Between the VERTIX 2S and Grit X2 Pro, the VERTIX 2S comes out ahead in smartwatch mode and gps mode, while the Grit X2 Pro wins on ecg. Overall, the VERTIX 2S scores 66.9 and the Grit X2 Pro scores 42.6 on our Mars Score.
Which should you buy?
The VERTIX 2S is the clear pick on raw spec strength, leading by 24.3 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 VERTIX 2S if you care most about smartwatch mode and gps mode. The biggest gaps in its favor are smartwatch mode, gps 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 VERTIX 2S is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Coros - VERTIX 2S wins
- ▲Smartwatch mode — 320.00% more. 42 days vs 10 days.
- ▲GPS mode — 174.42% more. 118 h vs 43 h.
- ▲Has Solar charging.
Why Polar - Grit X2 Pro wins
- ▲Has ECG.
Spec comparison
GPS & Sensors
| Spec | Coros - VERTIX 2S | 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 | Coros - VERTIX 2S | Polar - Grit X2 Pro |
|---|---|---|
| Smartwatch mode | 42 dayslead | 10 days |
| GPS mode | 118 hlead | 43 h |
| Solar charging | truelead | false |
Design
| Spec | Coros - VERTIX 2S | Polar - Grit X2 Pro |
|---|---|---|
| Case size | 50.3 mmlead | 47.5 mm |
| Weight | 84 g | 79 glead |
| Water resistanceⓘ | 10 ATM | 10 ATM |
Spec-level deep dives
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