Between the VERTIX 2S and Fenix 8 Solar (47mm), the VERTIX 2S comes out ahead in smartwatch mode and gps mode, while the Fenix 8 Solar (47mm) wins on ecg. Overall, the VERTIX 2S scores 66.9 and the Fenix 8 Solar (47mm) scores 58.4 on our Mars Score.
Which should you buy?
The VERTIX 2S is the clear pick on raw spec strength, leading by 8.5 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.
Pick the Fenix 8 Solar (47mm) if you care most about ecg. Its strongest claims are ecg.
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 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 — 50.00% more. 42 days vs 28 days.
- ▲GPS mode — 13.46% more. 118 h vs 104 h.
Why Garmin - Fenix 8 Solar (47mm) wins
- ▲Has ECG.
Spec comparison
GPS & Sensors
| Spec | Coros - VERTIX 2S | Garmin - Fenix 8 Solar (47mm) |
|---|---|---|
| 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 | Garmin - Fenix 8 Solar (47mm) |
|---|---|---|
| Smartwatch mode | 42 dayslead | 28 days |
| GPS mode | 118 hlead | 104 h |
| Solar charging | true | true |
Design
| Spec | Coros - VERTIX 2S | Garmin - Fenix 8 Solar (47mm) |
|---|---|---|
| Case size | 50.3 mmlead | 47 mm |
| Weight | 84 g | 82 glead |
| Water resistanceⓘ | 10 ATM | 10 ATM |
Frequently asked
Spec-level deep dives
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