Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Coros - Apex 2 | Suunto - Vertical Titanium Solar |
|---|---|---|
| Smartwatch mode | 17 days | 60 days |
| GPS mode | 45 h | 85 h |
| Multi-band GPS | false | true |
| Solar charging | false | true |
Between the Apex 2 and Vertical Titanium Solar, the Apex 2 comes out ahead in several specs, while the Vertical Titanium Solar wins on smartwatch mode / gps mode. Overall, the Apex 2 scores 46.1 and the Vertical Titanium Solar scores 80 on our Mars Score.
Which should you buy?
The Vertical Titanium Solar is the clear pick on raw spec strength, leading by 33.9 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.
The Apex 2 does not pull ahead on any single popular-comparison spec — its strengths sit in the spec-table groups rather than the headline advantages.
Pick the Vertical Titanium Solar if you care most about smartwatch mode / gps mode. Its strongest claims are smartwatch mode, gps mode, multi-band gps, among others. The single most decisive one: Smartwatch mode — 252.94% more. 60 days vs 17 days.
Both ship with comparable ecg, so those specs do not separate the two — focus on the differences below.
Bottom line: the Vertical Titanium Solar is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Coros - Apex 2 or Suunto - Vertical Titanium Solar?
Suunto - Vertical Titanium Solar leads the current Mars Score by 33.9 points.The more useful decision is the trade-off behind that result: compare smartwatch mode, gps mode against the way you will actually use the product.
Choose Coros - Apex 2 if…
Coros - Apex 2 does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose Suunto - Vertical Titanium Solar if…
Suunto - Vertical Titanium Solar has the measurable edge on battery smartwatch days, battery gps hours, has multiband gps.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Coros - Apex 2 wins
- No decisive advantages.
Why Suunto - Vertical Titanium Solar wins
- ▲Smartwatch mode — 252.94% more. 60 days vs 17 days.
- ▲GPS mode — 88.89% more. 85 h vs 45 h.
- ▲Has Multi-band GPS.
- ▲Has Solar charging.
Spec comparison
GPS & Sensors
| Spec | Coros - Apex 2 | Suunto - Vertical Titanium Solar |
|---|---|---|
| Multi-band GPS | false | truelead |
| Barometric altimeter | true | true |
| Heart rate | true | true |
| ECG | false | false |
| Pulse Ox | true | true |
Battery
| Spec | Coros - Apex 2 | Suunto - Vertical Titanium Solar |
|---|---|---|
| Smartwatch mode | 17 days | 60 dayslead |
| GPS mode | 45 h | 85 hlead |
| Solar charging | false | truelead |
Design
| Spec | Coros - Apex 2 | Suunto - Vertical Titanium Solar |
|---|---|---|
| Case size | 43 mm | 49 mmlead |
| Weight | 53 glead | 74 g |
| Water resistanceⓘ | 5 ATM | 10 ATMlead |