Between the Forerunner 265 and Ocean, the Forerunner 265 comes out ahead in smartwatch mode, while the Ocean wins on gps mode. Overall, the Forerunner 265 scores 42.8 and the Ocean scores 41.3 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (42.8 vs 41.3). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the Forerunner 265 if you care most about smartwatch mode. The biggest gaps in its favor are smartwatch mode.
Pick the Ocean if you care most about gps mode. Its strongest claims are gps mode.
Both ship with comparable multi-band gps, solar charging, ecg, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Garmin - Forerunner 265 wins
- ▲Smartwatch mode — 30.00% more. 13 days vs 10 days.
Why Suunto - Ocean wins
- ▲GPS mode — 25.00% more. 30 h vs 24 h.
Spec comparison
GPS & Sensors
| Spec | Garmin - Forerunner 265 | Suunto - Ocean |
|---|---|---|
| Multi-band GPS | true | true |
| Barometric altimeter | false | truelead |
| Heart rate | true | true |
| ECG | false | false |
| Pulse Ox | true | true |
Battery
| Spec | Garmin - Forerunner 265 | Suunto - Ocean |
|---|---|---|
| Smartwatch mode | 13 dayslead | 10 days |
| GPS mode | 24 h | 30 hlead |
| Solar charging | false | false |
Design
| Spec | Garmin - Forerunner 265 | Suunto - Ocean |
|---|---|---|
| Case size | 46 mm | 49 mmlead |
| Weight | 47 glead | 78 g |
| Water resistanceⓘ | 5 ATM | 30 ATMlead |
Frequently asked
Spec-level deep dives
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