Garmin Forerunner 965 vs Samsung Galaxy Watch 3
The Verdict
Garmin's Forerunner 965 dominates battery performance with up to 23 days in smartwatch mode versus Samsung's Galaxy Watch 3's measly 1.5 days typical usage. The Garmin's 1.4-inch AMOLED display at 454 x 454 resolution also surpasses the Galaxy Watch 3's 360 x 360 Super AMOLED screen. For fitness tracking, both offer SpO2 and heart rate monitoring, but Samsung includes ECG functionality while Garmin adds skin temperature monitoring. Samsung's stainless steel or titanium construction with MIL-STD-810G durability rating feels more premium than Garmin's fiber-reinforced polymer, though both handle water activities well (10 ATM vs 5 ATM). The Galaxy Watch 3 weighs slightly less at 48.2g for the 41mm model and includes cellular connectivity, making it genuinely practical for calls without your phone. At $200 less, Samsung offers quicker smartphone integration if you're in the Android ecosystem. However, Garmin's exceptional battery life, superior display resolution, and specialized fitness tracking make it ideal for runners and outdoor athletes who want multi-week usage between charges. Samsung suits users prioritizing smartwatch versatility and lighter weight. Choose Garmin for athletic performance, Samsung for everyday smart features.
Who Should Buy
Buy the Garmin Forerunner 965 if…
- →23-day battery life in smartwatch mode for serious endurance athletes
- →First Forerunner with AMOLED display — bright and easy to read
- →Multi-band GPS with SatIQ for highly accurate outdoor tracking
Buy the Samsung Galaxy Watch 3 if…
- →Physical rotating bezel provides tactile, satisfying navigation
- →Premium stainless steel build with classic watch aesthetics
- →ECG and SpO2 monitoring were cutting-edge at launch
Category Scores
Pros & Cons
Garmin Forerunner 965
Pros
- 23-day battery life in smartwatch mode for serious endurance athletes
- First Forerunner with AMOLED display — bright and easy to read
- Multi-band GPS with SatIQ for highly accurate outdoor tracking
- Advanced running metrics: running power, VO2 max, race predictor
- Garmin Pay NFC and music storage for offline playback
Cons
- No ECG sensor
- No cellular connectivity
- Garmin OS app ecosystem is very limited compared to Wear OS or watchOS
- Expensive at $599 for a running-focused device
Samsung Galaxy Watch 3
Pros
- Physical rotating bezel provides tactile, satisfying navigation
- Premium stainless steel build with classic watch aesthetics
- ECG and SpO2 monitoring were cutting-edge at launch
- Fall detection with automatic SOS alerts
- Thinner and lighter than Galaxy Watch (2018)
Cons
- Tizen OS is now discontinued — no new app development
- Battery life of 1.5 days typical requires frequent charging
- Older Exynos 9110 is noticeably slower than W920
- Heavy at 48-54 g — uncomfortable for sleep tracking
Full Specifications
| Spec | Garmin Forerunner 965 | Samsung Galaxy Watch 3 |
|---|---|---|
| Software | Garmin OS | Tizen OS 5.5 |
| Body | ||
| Weight | 53 g | 48.2 g (41mm) / 53.8 g (45mm) |
| Case material | Fiber-reinforced polymer with titanium bezel | Stainless Steel / Titanium |
| Water resistance | 10 ATM | 5ATM + IP68, MIL-STD-810G |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 23 days smartwatch mode, 31 hrs GPS | Up to 2 days (typical ~1.5 days) |
| Display | ||
| Size | 1.4 inch | 41mm / 45mm |
| Type | AMOLED | Super AMOLED |
| Always-on display | ||
| Resolution | 454 x 454 | 360 x 360 |
| Processor | ||
| Chipset | Garmin proprietary | Exynos 9110 |
| Connectivity | ||
| GPS | ||
| NFC | ||
| Wi-Fi | ||
| Cellular | ||
| Bluetooth | 5.0 | 5.0 |
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This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
Explore more in smartwatches, see all Garmin products or all Samsung products. View full details for the Garmin Forerunner 965 or the Samsung Galaxy Watch 3.

