Between the Forerunner 965 and Grit X2 Pro, the Forerunner 965 comes out ahead in smartwatch mode, while the Grit X2 Pro wins on gps mode and ecg. Overall, the Forerunner 965 scores 49.7 and the Grit X2 Pro scores 42.6 on our Mars Score.
Which should you buy?
The Forerunner 965 edges ahead on the Mars Score (49.7 vs 42.6), but the 7.1-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Forerunner 965 if you care most about smartwatch mode. The biggest gaps in its favor are smartwatch mode.
Pick the Grit X2 Pro if you care most about gps mode and ecg. Its strongest claims are gps mode, 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 Forerunner 965 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Garmin - Forerunner 965 wins
- ▲Smartwatch mode — 130.00% more. 23 days vs 10 days.
Why Polar - Grit X2 Pro wins
- ▲GPS mode — 38.71% more. 43 h vs 31 h.
- ▲Has ECG.
Spec comparison
GPS & Sensors
| Spec | Garmin - Forerunner 965 | 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 - Forerunner 965 | Polar - Grit X2 Pro |
|---|---|---|
| Smartwatch mode | 23 dayslead | 10 days |
| GPS mode | 31 h | 43 hlead |
| Solar charging | false | false |
Design
| Spec | Garmin - Forerunner 965 | Polar - Grit X2 Pro |
|---|---|---|
| Case size | 47 mm | 47.5 mmlead |
| Weight | 53 glead | 79 g |
| Water resistanceⓘ | 5 ATM | 10 ATMlead |
Frequently asked
Spec-level deep dives
More from the same brands
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.