Garmin Fenix 8 47mm Solar vs Forerunner 935
Size, specs & wrist fit compared
Which one fits you
Both need much the same wrist: neither overhangs from 16.5 cm (6.5 in) round, and both are in their sweet spot around 17.5–19.5 cm. Wrist size will not decide between these two.
What else differs
- Screen: the Fenix 8 47mm Solar has the larger screen, 1.3 in across against 1.2 in on the Forerunner 935.
- Battery: 21 days for the Fenix 8 47mm Solar against 14 days for the Forerunner 935 in everyday use; 2.8 days for the Fenix 8 47mm Solar against 24 hours for the Forerunner 935 with GPS on.
- Only the Fenix 8 47mm Solar has a sapphire lens.
The Fenix 8 47mm Solar and Forerunner 935 share a near-identical 47mm case, so on the wrist the difference is thickness and weight.
Among the 79 smartwatches 47mm across that we hold thickness for, the Fenix 8 47mm Solar is thicker than 87%, so it sits higher on the wrist than most of its size.
The Fenix 8 47mm Solar is 1.3mm thicker and 31g heavier than the Forerunner 935.
Fenix 8 47mm Solar
Forerunner 935
Case width
47mm
47mmsame
Thickness
15.2mm
13.9mm−1.3mm
Weight
80g
49g−31g
Fenix 8 47mm Solar or Forerunner 935 by wrist size
| Wrist round (mm left each side) | Fenix 8 47mm Solar≈54mm lug to lug, est. | Forerunner 935≈54mm lug to lug, est. |
|---|---|---|
| 14 cm / 5.5 in | Overhangs (4.4mm over) | Overhangs (4.4mm over) |
| 15 cm / 5.9 in | Overhangs (2.8mm over) | Overhangs (2.8mm over) |
| 16 cm / 6.3 in | Overhangs (1.2mm over) | Overhangs (1.2mm over) |
| 17 cm / 6.7 in | Bold (0.4mm) | Bold (0.4mm) |
| 18 cm / 7.1 in | Sweet spot (2mm) | Sweet spot (2mm) |
| 19 cm / 7.5 in | Sweet spot (3.6mm) | Sweet spot (3.6mm) |
| 20 cm / 7.9 in | Balanced (5.3mm) | Balanced (5.3mm) |
Switch or add watches
Garmin
Fenix 8 47mm Solar
Garmin
Forerunner 935
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Battery life compared
Fenix 8 47mm SolarForerunner 935
Battery saver
34 days +58 days—Expedition
34 days +58 days—Smartwatch
21 days +28 days2 weeksMax battery GPS
132 hours +283 hours—GPS only
67 hours +92 hours24 hoursUltraTrac™
—60 hoursAll systems
48 hours +59 hours—All systems + multi-band
37 hours +43 hours—All systems with music
13 hours—
Amber figures are the solar-assisted runtime the manufacturer publishes for that mode.
More comparisons
2D Dimension Schematics
- Garmin Fenix 8 47mm Solar 47mm × ≈54mm (est.) · 15.2mm thick
- Garmin Forerunner 935 47mm × ≈54mm (est.) · 13.9mm thick
3D preview
Fenix 8 47mm Solar vs Forerunner 935 on a wrist
Specifications
The short version
6 key specs| Spec | GarminFenix 8 47mm Solar | GarminForerunner 935 |
|---|---|---|
| Case Width | 47mm | 47mm |
| Thickness | 15.2mm | 13.9mm |
| Weight | 80g | 49g |
| Shape | Circular | Circular |
| Battery life | Smartwatch: Up to 21 days/28 days with solar* Battery Saver Watch Mode: Up to 34 days/58 days with solar* GPS Only: Up to 67 hours/92 hours with solar** All Satellite Systems: Up to 48 hours/59 hours with solar** All Satellite Systems + Multi-band: Up to 37 hours/43 hours with solar*** All Satellite Systems + Music: Up to 13 hours Max Battery GPS: Up to 132 hours/283 hours with solar** Expedition GPS: Up to 34 days/58 days 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 | Smartwatch Mode: Up to 2 weeksGPS/HR mode: Up to 24 hoursUltraTrac™ mode: Up to 60 hours without wrist heart rate |
| Released | 2024 | 2017 |
Where the specifications differ
25 differences| Spec | Garmin Fenix 8 47mm Solar | Garmin Forerunner 935 |
|---|---|---|
| General | ||
| Battery life | Smartwatch: Up to 21 days/28 days with solar* Battery Saver Watch Mode: Up to 34 days/58 days with solar* GPS Only: Up to 67 hours/92 hours with solar** All Satellite Systems: Up to 48 hours/59 hours with solar** All Satellite Systems + Multi-band: Up to 37 hours/43 hours with solar*** All Satellite Systems + Music: Up to 13 hours Max Battery GPS: Up to 132 hours/283 hours with solar** Expedition GPS: Up to 34 days/58 days 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 | Smartwatch Mode: Up to 2 weeksGPS/HR mode: Up to 24 hoursUltraTrac™ mode: Up to 60 hours without wrist heart rate |
| Display Size | 1.3” (33.00 mm) diameter | 1.2" (30.4 mm) diameter |
| Case material | fiber-reinforced polymer with metal rear cover | fiber-reinforced polymer |
| Lens Material | Power Sapphire™ | chemically strengthened glass |
| Bezel Material | titanium | fiber-reinforced polymer |
| Memory/History | 32 GB | 64 MB |
| Display resolution | 260 x 260 pixels | 240 x 240 pixels |
| QuickFit® watch band compatible | included (22 mm) | yes (22 mm) |
| Product Info | ||
| Main SKU | 010-02906-20 | 010-01746-00 |
| Product ID | 1389491 | 564291 |
| Product Name | fēnix® 8 – 47 mm, Solar | Forerunner® 935 |
| Release Date | 8/27/2024 | 3/29/2017 |
| Product Variation | Sapphire, Titanium with Amp Yellow/Graphite Silicone Band | Black |
| Running Features | ||
| Running dynamics | Yes | yes (with compatible accessory) |
| Stride length (real time) | Yes | yes (with compatible accessory) |
| Vertical oscillation and ratio | Yes | yes (with compatible accessory) |
| Ground contact time and balance | yes (GCT balance with accessory) | yes (with compatible accessory) |
| Activity Profiles | ||
| Gym | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Jump Roping | Strength and Cardio Training, Indoor Rowing |
| Cycling | Biking, Road Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX | Biking, Indoor Biking, Mountain Biking |
| Outdoor recreation | Hiking, Rucking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery | Hiking, Climbing, Skiing, Snowboarding, XC Classic Skiing, Stand Up Paddleboarding, Rowing, Jumpmaster, Tactical |
| 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-Tri, HRM-Swim, HRM-Pro or HRM-Pro Plus) | yes (with HRM-Tri™ and HRM-Swim™) |
| Outdoor Recreation | ||
| Fish forecast | Yes | yes (via Connect IQ™) |
| Sun and moon information | Yes | yes (via Connect IQ™) |
| Daily Smart Features | ||
| Connectivity | Bluetooth®, ANT+®, Wi-Fi® | Bluetooth® Smart, ANT+®, Wi-Fi® |
| Health & Wellness Monitoring | ||
| Fitness age | Yes | yes (in app) |
The other 138 specifications both list are identical.
Full Garmin Fenix 8 47mm Solar specifications →Full Garmin Forerunner 935 specifications →