Garmin Fenix 7 Pro Solar Edition vs Fenix 8 47mm Solar
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
- Battery: 21 days for the Fenix 8 47mm Solar against 18 days for the Fenix 7 Pro Solar Edition in everyday use; 2.8 days for the Fenix 8 47mm Solar against 2.4 days for the Fenix 7 Pro Solar Edition with GPS on.
- Only the Fenix 8 47mm Solar has a sapphire lens.
The Fenix 7 Pro Solar Edition and Fenix 8 47mm Solar 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 7 Pro Solar Edition is 0.7mm thinner and 1g lighter than the Fenix 8 47mm Solar.
Fenix 7 Pro Solar Edition
Fenix 8 47mm Solar
Case width
47mm
47mmsame
Thickness
14.5mm
15.2mm+0.7mm
Weight
79g
80g+1g
Fenix 7 Pro Solar Edition or Fenix 8 47mm Solar by wrist size
| Wrist round (mm left each side) | Fenix 7 Pro Solar Edition≈54mm lug to lug, est. | Fenix 8 47mm Solar≈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 7 Pro Solar Edition
Garmin
Fenix 8 47mm Solar
As an Amazon Associate, WatchFitTool earns from qualifying purchases.
Battery life compared
Furthest apart in Battery saver mode, where the 7 Pro Solar Edition lasts 1.7× as long as the 8 47mm Solar (57 days against 34 days).
7 Pro Solar Edition8 47mm Solar
Battery saver
57 days +173 days34 days +58 daysExpedition
40 days +74 days34 days +58 daysSmartwatch
18 days +22 days21 days +28 daysMax battery GPS
136 hours +289 hours132 hours +283 hoursGPS only
57 hours +73 hours67 hours +92 hoursAll systems
40 hours +48 hours48 hours +59 hoursAll systems + multi-band
23 hours +26 hours37 hours +43 hoursAll systems with music
10 hours13 hours
Amber figures are the solar-assisted runtime the manufacturer publishes for that mode.
More comparisons
2D Dimension Schematics
- Garmin Fenix 7 Pro Solar Edition 47mm × ≈54mm (est.) · 14.5mm thick
- Garmin Fenix 8 47mm Solar 47mm × ≈54mm (est.) · 15.2mm thick
3D preview
Fenix 7 Pro Solar Edition vs Fenix 8 47mm Solar on a wrist
Specifications
The short version
7 key specs| Spec | GarminFenix 7 Pro Solar Edition | GarminFenix 8 47mm Solar |
|---|---|---|
| Case Width | 47mm | 47mm |
| Thickness | 14.5mm | 15.2mm |
| Weight | 79g | 80g |
| Shape | Circular | Circular |
| Display type | Sunlight-visible, transflective memory-in-pixel (MIP) | Sunlight-visible, transflective memory-in-pixel (MIP) |
| Battery life | Smartwatch: Up to 18 days/22 days with solar* Battery Saver Watch Mode: Up to 57 days/173 days with solar* GPS Only: Up to 57 hours/73 hours with solar** All Satellite Systems: Up to 40 hours/48 hours with solar* All Satellite Systems + Multi-band: Up to 23 hours/26 hours with solar** All Satellite Systems + Music: Up to 10 hours Max Battery GPS: Up to 136 hours/289 hours with solar** Expedition GPS: Up to 40 days/74 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 | 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 |
| Released | 2023 | 2024 |
Where the specifications differ
17 differences| Spec | Garmin Fenix 7 Pro Solar Edition | Garmin Fenix 8 47mm Solar |
|---|---|---|
| General | ||
| Battery life | Smartwatch: Up to 18 days/22 days with solar* Battery Saver Watch Mode: Up to 57 days/173 days with solar* GPS Only: Up to 57 hours/73 hours with solar** All Satellite Systems: Up to 40 hours/48 hours with solar* All Satellite Systems + Multi-band: Up to 23 hours/26 hours with solar** All Satellite Systems + Music: Up to 10 hours Max Battery GPS: Up to 136 hours/289 hours with solar** Expedition GPS: Up to 40 days/74 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 | 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 |
| Display Size | 1.3” (33.02 mm) diameter | 1.3” (33.00 mm) diameter |
| Case material | fiber-reinforced polymer with steel rear cover | fiber-reinforced polymer with metal rear cover |
| Lens Material | Power Glass™ | Power Sapphire™ |
| Bezel Material | stainless steel | titanium |
| Product Info | ||
| Main SKU | 010-02777-00 | 010-02906-20 |
| Product ID | 865822 | 1389491 |
| Product Name | fēnix® 7 Pro – Solar Edition | fēnix® 8 – 47 mm, Solar |
| Release Date | 6/1/2023 | 8/27/2024 |
| Product Variation | Slate Gray with Black Band | Sapphire, Titanium with Amp Yellow/Graphite Silicone Band |
| What You'll Love | ||
| Battery life (smartwatch mode) | Up to 18 days22 days with solar | Up to 21 days (28 days with solar) |
| Activity Profiles | ||
| Wellness | Walking, Pilates, Yoga, Indoor Walking | Walking, Indoor Walking, Pilates, Yoga |
| On the Water | Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Sailing, Sail Racing, Water Skiing, Wakeboarding, Wakesurfing, Tubing, Snorkeling, Sailing Expedition, Whitewater | Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Sailing, Water Skiing, Wakeboarding, Wakesurfing, Tubing, Snorkeling, Whitewater |
| Outdoor recreation | Hiking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery | Hiking, Rucking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery |
| Other activity profiles | Jumpmaster, Tactical, Inline Skating | Inline Skating |
| Outdoor Recreation | ||
| Tides | yes (via Connect IQ™) | Yes |
| Health & Wellness Monitoring | ||
| Fitness age | yes (in app) | Yes |
The other 250 specifications both list are identical.
Full Garmin Fenix 7 Pro Solar Edition specifications →Full Garmin Fenix 8 47mm Solar specifications →