Garmin
Device summary
Garmin
Forerunner 570 42mm
Full specifications
| Basic information | ||
|---|---|---|
| Release year | 2026 | 2025 |
| Starting price | — | — |
| Display size | 1.2-inch | 1.2-inch |
| Dimensions | 43.0 mm × 43.0 mm × 12.6 mm | 42.4 mm × 42.4 mm × 12.9 mm |
| Weight | 45 g | 42 g |
| Front material | — | — |
| Back material | — | — |
| Display | ||
| Display technology | AMOLED | AMOLED |
| Resolution | 390 × 390 | 390 × 390 |
| Battery & charging | ||
| Charging standard | Garmin proprietary clip / USB charging | Garmin proprietary clip / USB charging |
| Battery type | Lithium-ion | Lithium-ion |
| Connectivity | ||
| Cellular | GPS / multi-GNSS | GPS / multi-GNSS |
| Bluetooth | Bluetooth | Bluetooth |
| NFC | Yes | Yes |
| Build & durability | ||
| Frame | Fiber-reinforced polymer | Fiber-reinforced polymer; aluminum bezel |
| Ingress protection | 5 ATM | 5 ATM |
| Basic information | ||
|---|---|---|
| Release year | 2026 | 2025 |
| Starting price | — | — |
| Display size | 1.2-inch | 1.2-inch |
| Dimensions | 43.0 mm × 43.0 mm × 12.6 mm | 42.4 mm × 42.4 mm × 12.9 mm |
| Weight | 45 g | 42 g |
| Front material | — | — |
| Back material | — | — |
| Display | ||
| Display technology | AMOLED | AMOLED |
| Resolution | 390 × 390 | 390 × 390 |
| Battery & charging | ||
| Charging standard | Garmin proprietary clip / USB charging | Garmin proprietary clip / USB charging |
| Battery type | Lithium-ion | Lithium-ion |
| Connectivity | ||
| Cellular | GPS / multi-GNSS | GPS / multi-GNSS |
| Bluetooth | Bluetooth | Bluetooth |
| NFC | Yes | Yes |
| Build & durability | ||
| Frame | Fiber-reinforced polymer | Fiber-reinforced polymer; aluminum bezel |
| Ingress protection | 5 ATM | 5 ATM |
Key differences
The most meaningful measured gaps in size and weight — not an overall winner.
Thickness
Forerunner 170
0.3 mm thinner · minor difference
Weight
Forerunner 570 42mm
3 g lighter · minor difference
Height
Forerunner 170
0.6 mm taller · minor difference
Width
Forerunner 170
0.6 mm wider · minor difference
What these size differences mean
Calculated from the dimensions shown, rounded to 0.1 mm and 1 g. Percentages use the smaller measurement as the reference. Fold and rotation settings affect the dimensions compared.
- Forerunner 170 is 0.6 mm (1.4% relative to Forerunner 570 42mm) wider. Check this difference against the width of your current device and pocket opening.
- Forerunner 170 is 0.6 mm (1.4% relative to Forerunner 570 42mm) taller. This describes the body outline; screen diagonal alone does not tell you the overall size.
- Forerunner 570 42mm is 0.3 mm (2.4% relative to Forerunner 170) thicker. Cases and camera protrusions can change the clearance you need.
- Forerunner 570 42mm is 3 g lighter. This is the listed device-weight difference, not a measured comfort rating.
Use these figures to compare physical size. They do not establish one-handed reach, pocket fit, durability or an overall winner.
Sources and measurement notes
Sizometry compares published specifications and calculates differences. These are not hands-on measurements or tests of comfort, performance or pocket fit.
Forerunner 170
Forerunner 570 42mm
Check the exact model, year, region and configuration on the linked page. References may cover several variants. Folded and unfolded dimensions differ; cases and camera protrusions may change the space a device needs. Drawings share a relative scale and are not calibrated to life size on your screen.