Garmin Forerunner 570 42mm vs Instinct 3 45mm Solar
Size, specs & wrist fit compared
Which one fits you
Under 16 cm (6.3 in) round, the Instinct 3 45mm Solar's lugs overhang and the Forerunner 570 42mm's do not; the Forerunner 570 42mm fills the wrist at 16–18 cm, the Instinct 3 45mm Solar at 17–19 cm.
What else differs
- Screen: the Forerunner 570 42mm uses a bright AMOLED screen, the Instinct 3 45mm Solar a memory-in-pixel screen that is easy to read in sunlight and sips battery.
- Battery: 28 days for the Instinct 3 45mm Solar against 10 days for the Forerunner 570 42mm in everyday use; 40 hours for the Instinct 3 45mm Solar against 18 hours for the Forerunner 570 42mm with GPS on.
2mm thinner, the Forerunner 570 42mm is the one that slides under a shirt cuff.
The Instinct 3 45mm Solar is 2.6mm wider, 2mm thicker and 10g heavier than the Forerunner 570 42mm.
Forerunner 570 42mm
Instinct 3 45mm Solar
Case width
42.4mm
45mm+2.6mm
Thickness
12.9mm
14.9mm+2mm
Weight
42g
52g+10g
Forerunner 570 42mm or Instinct 3 45mm Solar by wrist size
| Wrist round (mm left each side) | Forerunner 570 42mm≈49mm lug to lug, est. | Instinct 3 45mm Solar≈51.5mm lug to lug, est. |
|---|---|---|
| 14 cm / 5.5 in | Overhangs (1.9mm over) | Overhangs (3.2mm over) |
| 15 cm / 5.9 in | Overhangs (0.3mm over) | Overhangs (1.6mm over) |
| 16 cm / 6.3 in | Sweet spot (1.3mm) | Bold (0.1mm) |
| 17 cm / 6.7 in | Sweet spot (2.9mm) | Sweet spot (1.7mm) |
| 18 cm / 7.1 in | Balanced (4.5mm) | Sweet spot (3.3mm) |
| 19 cm / 7.5 in | Balanced (6.1mm) | Balanced (4.9mm) |
| 20 cm / 7.9 in | Balanced (7.8mm) | Balanced (6.5mm) |
Switch or add watches
Garmin
Forerunner 570 42mm
Garmin
Instinct 3 45mm Solar
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Battery life compared
Forerunner 570 42mmInstinct 3 45mm Solar
Battery saver
—65 daysExpedition
—36 daysSmartwatch
10 days28 daysMax battery GPS
—100 hoursGPS only
18 hours40 hours +130 hoursAll systems
—28 hours +50 hoursAll systems + multi-band
13 hours24 hours +40 hoursGPS with music
9 hours—All systems + multi-band with music
8 hours—
Amber figures are the solar-assisted runtime the manufacturer publishes for that mode.
More comparisons
Garmin Forerunner 570 42mm vs Garmin Forerunner 570 47mmGarmin Forerunner 570 42mm vs Garmin Vivoactive 6Garmin Epix Pro Gen 2 Standard Edition 42mm vs Garmin Forerunner 570 42mmGarmin Fenix 7 Pro Solar Edition vs Garmin Forerunner 570 42mmGarmin Instinct 3 45mm Solar vs Garmin Venu 4 45mmGarmin Instinct 3 45mm Solar vs Garmin Instinct E 45mm
2D Dimension Schematics
- Garmin Forerunner 570 42mm 42.4mm × ≈49mm (est.) · 12.9mm thick
- Garmin Instinct 3 45mm Solar 45mm × ≈51.5mm (est.) · 14.9mm thick
3D preview
Forerunner 570 42mm vs Instinct 3 45mm Solar on a wrist
Specifications
The short version
7 key specs| Spec | GarminForerunner 570 42mm | GarminInstinct 3 45mm Solar |
|---|---|---|
| Case Width | 42.4mm | 45mm |
| Thickness | 12.9mm | 14.9mm |
| Weight | 42g | 52g |
| Shape | Circular | Circular |
| Display type | AMOLED (optional always-on mode) | Monochrome, sunlight-visible, transflective memory-in-pixel (MIP) |
| Battery life | 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 | Smartwatch: Up to 28 days/Unlimited with solar* Battery Saver Watch Mode: Up to 65 days/Unlimited with solar* GPS Only: Up to 40 hours/130 hours with solar** All Satellite Systems: Up to 28 hours/50 hours with solar** All Satellite Systems + Multi-Band: Up to 24 hours/40 hours with solar*** Max Battery GPS: Up to 100 hours/Unlimited with solar** Expedition GPS: Up to 36 days/Unlimited with solar* *Solar charging, assuming all-day wear with 3 hours per day outside in 50,000 lux conditions **Solar charging, assuming use in 50,000 lux conditions ***Solar charging, assuming use in 50,000 lux conditions; assuming typical use with SatIQ technology |
| Released | 2025 | 2025 |
Where the specifications differ
30 differences| Spec | Garmin Forerunner 570 42mm | Garmin Instinct 3 45mm Solar |
|---|---|---|
| General | ||
| Battery life | 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 | Smartwatch: Up to 28 days/Unlimited with solar* Battery Saver Watch Mode: Up to 65 days/Unlimited with solar* GPS Only: Up to 40 hours/130 hours with solar** All Satellite Systems: Up to 28 hours/50 hours with solar** All Satellite Systems + Multi-Band: Up to 24 hours/40 hours with solar*** Max Battery GPS: Up to 100 hours/Unlimited with solar** Expedition GPS: Up to 36 days/Unlimited with solar* *Solar charging, assuming all-day wear with 3 hours per day outside in 50,000 lux conditions **Solar charging, assuming use in 50,000 lux conditions ***Solar charging, assuming use in 50,000 lux conditions; assuming typical use with SatIQ technology |
| Display Size | 1.2" (30.4 mm) diameter | custom, two-window design; 0.9” x 0.9” (23 x 23 mm) |
| Lens Material | Corning® Gorilla® Glass 3 | Power Glass™ |
| Bezel Material | aluminum | fiber-reinforced polymer/aluminum |
| Memory/History | 8 GB | 128 MB |
| Display resolution | 390 x 390 pixels | 176 x 176 pixels |
| Product Info | ||
| Main SKU | 010-02970-00 | 010-02934-00 |
| Product ID | 1463821 | 1315317 |
| Product Name | Forerunner® 570 - 42mm | Instinct® 3 – 45 mm, Solar |
| Release Date | 5/15/2025 | 1/6/2025 |
| Product Variation | Slate Gray Aluminum with Translucent Black/Black Band | Black with Black Band |
| Golfing Features | ||
| Measures shot distance (calculates exact yardage for shots from anywhere on course) | automatic | manual |
| Running Features | ||
| Lactate threshold | Yes | yes (with compatible accessory) |
| What You'll Love | ||
| Display type | AMOLED (optional always-on mode) | Monochrome, sunlight-visible, transflective memory-in-pixel (MIP) |
| Water rating | 5 ATM | 10 ATM |
| Training status | yes (improved) | Yes |
| Pulse Ox blood oxygen | yes (spot-check, and optional all-day acclimation and in sleep) | Yes |
| Battery life (smartwatch mode) | Up to 10 days | Up to 28 daysUnlimited with solar |
| Activity Profiles | ||
| Gym | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Jump Roping | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing |
| Wellness | Walking, Pilates, Yoga, Indoor Walking, Mobility | Walking, Indoor Walking, Pilates, Yoga |
| Multisport | Triathlon, Duathlon, Brick, Pool Triathlon, Swimming/Running | Triathlon |
| On the Water | Stand Up Paddleboarding, Rowing, Kayaking, Fishing, Boating | Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Water Skiing, Snorkeling, Wakeboarding, Wakesurfing, Tubing, Whitewater |
| Snow & winter | Skiing, Snowboarding, XC Classic Skiing, XC Skate Skiing, Ice Skating, Snowshoeing | Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing, XC Skate Skiing, Backcountry Skiing, Ice Skating, Snowshoeing |
| Outdoor running | Running, Outdoor Track Running, Trail Running, Ultra Running, Obstacle Racing | Running, Outdoor Track Running, Trail Running, Obstacle Racing |
| Outdoor recreation | Hiking, Rucking, Mountaineering, Indoor Climbing, Bouldering, Hunting, Horseback Riding, Golfing, Disc Golf, Archery | Hiking, Rucking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery |
| Other activity profiles | Inline skating | Tactical, Inline Skating |
| Swimming Features | ||
| Heart rate from external HRM (real-time during rests, interval and session stats during rests, and automatic heart rate download post-swim) | yes (with HRM-Swim, HRM-Pro, HRM-Pro Plus or HRM 600) | Yes |
| Outdoor Recreation | ||
| Area calculation | yes (via Connect IQ™) | Yes |
| Daily Smart Features | ||
| Connectivity | Bluetooth®, ANT+®, Wi-Fi® | Bluetooth®, ANT+® |
| Safety and Tracking Features | ||
| Live Event Sharing | Android™ Only | Yes |
The other 197 specifications both list are identical.
Full Garmin Forerunner 570 42mm specifications →Full Garmin Instinct 3 45mm Solar specifications →