Garmin Forerunner 245 vs Forerunner 570 42mm
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 16–18 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 Forerunner 570 42mm a bright AMOLED screen.
- Battery: 10 days for the Forerunner 570 42mm against 7 days for the Forerunner 245 in everyday use; 24 hours for the Forerunner 245 against 18 hours for the Forerunner 570 42mm with GPS on.
The Forerunner 245 and Forerunner 570 42mm share a near-identical 42.3mm case, so on the wrist the difference is thickness and weight.
The Forerunner 570 42mm is 0.1mm wider, 0.7mm thicker and 3.5g heavier than the Forerunner 245.
Forerunner 245
Forerunner 570 42mm
Case width
42.3mm
42.4mm+0.1mm
Thickness
12.2mm
12.9mm+0.7mm
Weight
38.5g
42g+3.5g
Forerunner 245 or Forerunner 570 42mm by wrist size
| Wrist round (mm left each side) | Forerunner 245≈48.5mm lug to lug, est. | Forerunner 570 42mm≈49mm lug to lug, est. |
|---|---|---|
| 14 cm / 5.5 in | Overhangs (1.7mm over) | Overhangs (1.9mm over) |
| 15 cm / 5.9 in | Overhangs (0.1mm over) | Overhangs (0.3mm over) |
| 16 cm / 6.3 in | Sweet spot (1.6mm) | Sweet spot (1.3mm) |
| 17 cm / 6.7 in | Sweet spot (3.2mm) | Sweet spot (2.9mm) |
| 18 cm / 7.1 in | Balanced (4.8mm) | Balanced (4.5mm) |
| 19 cm / 7.5 in | Balanced (6.4mm) | Balanced (6.1mm) |
| 20 cm / 7.9 in | Balanced (8mm) | Balanced (7.8mm) |
Switch or add watches
Garmin
Forerunner 245
Garmin
Forerunner 570 42mm
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Battery life compared
Forerunner 245Forerunner 570 42mm
Smartwatch
7 days10 daysGPS only
24 hours18 hoursAll systems + multi-band
—13 hoursGPS with music
—9 hoursAll systems + multi-band with music
—8 hours
More comparisons
2D Dimension Schematics
- Garmin Forerunner 245 42.3mm × ≈48.5mm (est.) · 12.2mm thick
- Garmin Forerunner 570 42mm 42.4mm × ≈49mm (est.) · 12.9mm thick
3D preview
Forerunner 245 vs Forerunner 570 42mm on a wrist
Specifications
The short version
7 key specs| Spec | GarminForerunner 245 | GarminForerunner 570 42mm |
|---|---|---|
| Case Width | 42.3mm | 42.4mm |
| Thickness | 12.2mm | 12.9mm |
| Weight | 38.5g | 42g |
| 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 10 days GPS-Only GNSS mode: Up to 18 hours SatIQ (AutoSelect) GNSS mode: Up to 14 hours All-Systems GNSS mode + Multi-Band: Up to 13 hours GPS-Only GNSS mode with music: Up to 9 hours SatIQ (AutoSelect) GNSS mode with music: Up to 8 hours All-Systems GNSS mode + Multi-Band with music: Up to 8 hours See Details |
| Released | 2019 | 2025 |
Where the specifications differ
27 differences| Spec | Garmin Forerunner 245 | Garmin Forerunner 570 42mm |
|---|---|---|
| General | ||
| Battery life | Smartwatch Mode: Up to 7 daysGPS mode: Up to 24 hours | Smartwatch mode: Up to 10 days GPS-Only GNSS mode: Up to 18 hours SatIQ (AutoSelect) GNSS mode: Up to 14 hours All-Systems GNSS mode + Multi-Band: Up to 13 hours GPS-Only GNSS mode with music: Up to 9 hours SatIQ (AutoSelect) GNSS mode with music: Up to 8 hours All-Systems GNSS mode + Multi-Band with music: Up to 8 hours See Details |
| Bezel Material | fiber-reinforced polymer | aluminum |
| Memory/History | 4 GB | 8 GB |
| Display resolution | 240 x 240 pixels | 390 x 390 pixels |
| Sensors | ||
| Thermometer | yes (tempe™ sensor required) | Yes |
| Product Info | ||
| Main SKU | 010-02120-00 | 010-02970-00 |
| Product ID | 628939 | 1463821 |
| Product Name | Forerunner® 245 | Forerunner® 570 - 42mm |
| Release Date | 4/30/2019 | 5/15/2025 |
| Product Variation | Slate Gray | Slate Gray Aluminum with Translucent Black/Black Band |
| Running Features | ||
| Running dynamics | yes (with compatible accessory) | Yes |
| Stride length (real time) | yes (with compatible accessory) | Yes |
| Vertical oscillation and ratio | yes (with compatible accessory) | Yes |
| Ground contact time and balance | yes (with compatible accessory) | yes (GCT balance with accessory) |
| What You'll Love | ||
| Display type | Sunlight-visible, transflective memory-in-pixel (MIP) | AMOLED (optional always-on mode) |
| Training status | Yes | yes (improved) |
| Pulse Ox blood oxygen | yes (spot-check and optionally in sleep) | yes (spot-check, and optional all-day acclimation and in sleep) |
| Battery life (smartwatch mode) | Up to 7 days | Up to 10 days |
| Activity Profiles | ||
| Gym | Strength, Cardio, Elliptical Training, Stair Stepping, Indoor Rowing | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Jump Roping |
| Swim | Pool Swimming | Pool Swimming, Open Water Swimming |
| Cycling | Biking, Indoor Biking | Biking, Road Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX |
| Wellness | Walking, Yoga | Walking, Pilates, Yoga, Indoor Walking, Mobility |
| Outdoor running | Running, Outdoor Track Running, Trail Running | Running, Outdoor Track Running, Trail Running, Ultra Running, Obstacle Racing |
| Daily Smart Features | ||
| Connectivity | Bluetooth®, ANT+® | Bluetooth®, ANT+®, Wi-Fi® |
| Smartphone compatibility | iPhone® and Android™ | iPhone®, Android™ |
| Health & Wellness Monitoring | ||
| Fitness age | yes (in app) | Yes |
| Training, Planning and Analysis Features | ||
| HR broadcast (broadcasts HR data over ANT+® to paired devices) | yes (using ANT+ or BLE) | Yes |
The other 119 specifications both list are identical.
Full Garmin Forerunner 245 specifications →Full Garmin Forerunner 570 42mm specifications →