Garmin Forerunner 245 vs Vivoactive 6
Size, specs & wrist fit compared
Which one fits you
Both need much the same wrist: neither overhangs from 15 cm (5.9 in) round, and both are in their sweet spot around 16–17.5 cm. Wrist size will not decide between these two.
What else differs
- Screen: the Forerunner 245 uses a memory-in-pixel screen that is easy to read in sunlight and sips battery, the Vivoactive 6 a bright AMOLED screen.
- Battery: 11 days for the Vivoactive 6 against 7 days for the Forerunner 245 in everyday use; 24 hours for the Forerunner 245 against 21 hours for the Vivoactive 6 with GPS on.
The Forerunner 245 and Vivoactive 6 share a near-identical 42.3mm case, so on the wrist the difference is thickness and weight.
The Forerunner 245 is 0.1mm wider and 1.3mm thicker than the Vivoactive 6.
Forerunner 245
Vivoactive 6
Forerunner 245 or Vivoactive 6 by wrist size
| Wrist round (mm left each side) | Forerunner 245≈48.5mm lug to lug, est. | Vivoactive 6≈48.5mm lug to lug, est. |
|---|---|---|
| 14 cm / 5.5 in | Overhangs (1.7mm over) | Overhangs (1.7mm over) |
| 15 cm / 5.9 in | Overhangs (0.1mm over) | Overhangs (0.1mm over) |
| 16 cm / 6.3 in | Sweet spot (1.6mm) | Sweet spot (1.6mm) |
| 17 cm / 6.7 in | Sweet spot (3.2mm) | Sweet spot (3.2mm) |
| 18 cm / 7.1 in | Balanced (4.8mm) | Balanced (4.8mm) |
| 19 cm / 7.5 in | Balanced (6.4mm) | Balanced (6.4mm) |
| 20 cm / 7.9 in | Balanced (8mm) | Balanced (8mm) |
Switch or add watches
Garmin
Forerunner 245
Garmin
Vivoactive 6
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Battery life compared
Forerunner 245Vivoactive 6
Battery saver
—21 daysSmartwatch
7 days11 daysGPS only
24 hours21 hoursAll systems
—17 hoursAll systems with music
—8 hours
More comparisons
2D Dimension Schematics
- Garmin Forerunner 245 42.3mm × ≈48.5mm (est.) · 12.2mm thick
- Garmin Vivoactive 6 42.2mm × ≈48.5mm (est.) · 10.9mm thick
3D preview
Forerunner 245 vs Vivoactive 6 on a wrist
Specifications
The short version
6 key specs| Spec | GarminForerunner 245 | GarminVivoactive 6 |
|---|---|---|
| Case Width | 42.3mm | 42.2mm |
| Thickness | 12.2mm | 10.9mm |
| Shape | Circular | Circular |
| Display type | Sunlight-visible, transflective memory-in-pixel (MIP) | AMOLED (optional always-on mode) |
| Battery life | Smartwatch Mode: Up to 7 daysGPS mode: Up to 24 hours | Smartwatch mode: Up to 11 days (5 days display always-on) Battery Saver Smartwatch mode: Up to 21 days GPS-Only GNSS mode: Up to 21 hours All-Systems GNSS mode: Up to 17 hours All-Systems GNSS mode with music: Up to 8 hours See details |
| Released | 2019 | 2025 |
Where the specifications differ
7 differences| Spec | Garmin Forerunner 245 | Garmin Vivoactive 6 |
|---|---|---|
| General | ||
| Battery life | Smartwatch Mode: Up to 7 daysGPS mode: Up to 24 hours | Smartwatch mode: Up to 11 days (5 days display always-on) Battery Saver Smartwatch mode: Up to 21 days GPS-Only GNSS mode: Up to 21 hours All-Systems GNSS mode: Up to 17 hours All-Systems GNSS mode with music: Up to 8 hours See details |
| Memory/History | 4 GB | 8 GB |
| Display resolution | 240 x 240 pixels | 390 x 390 pixels |
| What You'll Love | ||
| Display type | Sunlight-visible, transflective memory-in-pixel (MIP) | AMOLED (optional always-on mode) |
| Water rating | 5 ATM | Swim, 5 ATM |
| Pulse Ox blood oxygen | yes (spot-check and optionally in sleep) | yes (spot-check, and optional all-day and in sleep) |
| Battery life (smartwatch mode) | Up to 7 days | Up to 11 days (5 days display always-on) |
The other 7 specifications both list are identical.
Full Garmin Forerunner 245 specifications →Full Garmin Vivoactive 6 specifications →