Garmin Forerunner 255 vs Samsung Galaxy Watch 6 Classic
The Verdict
Garmin Forerunner 255 excels in battery endurance with up to 14 days of smartwatch use and 30 hours of continuous GPS tracking, making it ideal for athletes prioritizing long training sessions without charging. Samsung Galaxy Watch 6 Classic counters with superior display technology using a 480x480 Super AMOLED screen versus Garmin's 260x260 MIP display, delivering significantly richer visuals and colors. Samsung also includes comprehensive health features like ECG and skin temperature monitoring absent on Garmin, plus cellular connectivity for standalone calls and messages. Build quality favors Samsung with stainless steel construction and military-grade durability standards. However, Garmin's lighter weight (49g vs 59g) and exceptional battery life appeal to fitness-focused users who want minimal charging friction. For smartwatch versatility and health tracking depth, Samsung wins, but Garmin remains the better choice for endurance athletes. Samsung Galaxy Watch 6 Classic offers better overall value despite the higher price.
Who Should Buy
Buy the Garmin Forerunner 255 if…
- →14-day battery life means weekly charging at most
- →Multi-band GPS for exceptional outdoor tracking accuracy
- →Morning Report with daily training readiness and HRV status
Buy the Samsung Galaxy Watch 6 Classic if…
- →Rotating physical bezel for precise and tactile navigation
- →Premium stainless steel build that looks like a traditional watch
- →Larger 47 mm display with higher brightness
Category Scores
Pros & Cons
Garmin Forerunner 255
Pros
- 14-day battery life means weekly charging at most
- Multi-band GPS for exceptional outdoor tracking accuracy
- Morning Report with daily training readiness and HRV status
- Race Predictor estimates finish times for 5K to marathon
- Lightweight at 49 g and comfortable for 24/7 wear
Cons
- MIP display lacks the vibrancy of AMOLED competitors
- No touchscreen on base model — button-only navigation
- No ECG or blood pressure monitoring
- Limited smart features compared to Apple Watch or Wear OS
- Third-party app ecosystem is small
Samsung Galaxy Watch 6 Classic
Pros
- Rotating physical bezel for precise and tactile navigation
- Premium stainless steel build that looks like a traditional watch
- Larger 47 mm display with higher brightness
- Longer 44-hour battery life than standard Galaxy Watch 6
- Same full health suite including ECG and skin temperature
Cons
- Significantly heavier at 59 g due to the stainless steel case
- Premium price puts it close to Apple Watch Ultra territory
- Still best paired with Samsung Galaxy phones for full features
- Thicker profile than the standard Galaxy Watch 6
Full Specifications
| Spec | Garmin Forerunner 255 | Samsung Galaxy Watch 6 Classic |
|---|---|---|
| Software | Garmin proprietary OS | Wear OS 4 with One UI Watch 5 |
| Body | ||
| Weight | 49 g | 59 g |
| Case material | Fiber-reinforced polymer | Stainless steel |
| Water resistance | 5ATM | 5 ATM + IP68 / MIL-STD-810H |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 14 days (smartwatch), 30 hrs GPS | Up to 44 hrs (normal mode) |
| Display | ||
| Size | 46mm | 47 mm |
| Type | MIP (Memory-in-Pixel) transflective | Super AMOLED |
| Always-on display | ||
| Resolution | 260 x 260 | 480 x 480 |
| Processor | ||
| Chipset | Garmin custom SoC | Exynos W930 |
| RAM | — | 2 GB |
| Connectivity | ||
| GPS | ||
| NFC | ||
| Wi-Fi | ||
| Cellular | ||
| Bluetooth | 5.0 | 5.3 |
Related Comparisons
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 255 or the Samsung Galaxy Watch 6 Classic.