Garmin Descent G2 vs Fenix 7 Pro Sapphire Solar Edition
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 17–19.5 cm. Wrist size will not decide between these two.
What else differs
- Screen: the Fenix 7 Pro Sapphire Solar Edition has the larger screen, 1.3 in across against 1.2 in on the Descent G2, and the Descent G2 uses a bright AMOLED screen, the Fenix 7 Pro Sapphire Solar Edition a memory-in-pixel screen that is easy to read in sunlight and sips battery.
- Battery: 18 days for the Fenix 7 Pro Sapphire Solar Edition against 10 days for the Descent G2 in everyday use; 2.4 days for the Fenix 7 Pro Sapphire Solar Edition against 20 hours for the Descent G2 with GPS on.
The Fenix 7 Pro Sapphire Solar Edition is 1.5mm wider, 0.7mm thinner and 8g heavier than the Descent G2.
Descent G2
Fenix 7 Pro Sapphire Solar Edition
Case width
45.5mm
47mm+1.5mm
Thickness
15.2mm
14.5mm−0.7mm
Weight
65g
73g+8g
Descent G2 or Fenix 7 Pro Sapphire Solar Edition by wrist size
| Wrist round (mm left each side) | Descent G2≈52.5mm lug to lug, est. | Fenix 7 Pro Sapphire Solar Edition≈54mm lug to lug, est. |
|---|---|---|
| 14 cm / 5.5 in | Overhangs (3.7mm over) | Overhangs (4.4mm over) |
| 15 cm / 5.9 in | Overhangs (2.1mm over) | Overhangs (2.8mm over) |
| 16 cm / 6.3 in | Overhangs (0.4mm over) | Overhangs (1.2mm over) |
| 17 cm / 6.7 in | Bold (1.2mm) | Bold (0.4mm) |
| 18 cm / 7.1 in | Sweet spot (2.8mm) | Sweet spot (2mm) |
| 19 cm / 7.5 in | Sweet spot (4.4mm) | Sweet spot (3.6mm) |
| 20 cm / 7.9 in | Balanced (6mm) | Balanced (5.3mm) |
Switch or add watches
Garmin
Descent G2
Garmin
Fenix 7 Pro Sapphire Solar Edition
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Battery life compared
Furthest apart in Battery saver mode, where the Fenix 7 Pro Sapphire Solar Edition lasts 4.8× as long as the Descent G2 (57 days against 12 days).
Descent G2Fenix 7 Pro Sapphire Solar Edition
Battery saver
12 days57 days +173 daysExpedition
10 days40 days +74 daysSmartwatch
10 days18 days +22 daysMax battery GPS
44 hours136 hours +289 hoursGPS only
20 hours57 hours +73 hoursAll systems
15 hours40 hours +48 hoursDive
27 hours—All systems + multi-band
—23 hours +26 hoursAll systems with music
—10 hours
Amber figures are the solar-assisted runtime the manufacturer publishes for that mode.
More comparisons
2D Dimension Schematics
- Garmin Descent G2 45.5mm × ≈52.5mm (est.) · 15.2mm thick
- Garmin Fenix 7 Pro Sapphire Solar Edition 47mm × ≈54mm (est.) · 14.5mm thick
3D preview
Descent G2 vs Fenix 7 Pro Sapphire Solar Edition on a wrist
Specifications
The short version
7 key specs| Spec | GarminDescent G2 | GarminFenix 7 Pro Sapphire Solar Edition |
|---|---|---|
| Case Width | 45.5mm | 47mm |
| Thickness | 15.2mm | 14.5mm |
| Weight | 65g | 73g |
| Shape | Circular | Circular |
| Display type | AMOLED | Sunlight-visible, transflective memory-in-pixel (MIP) |
| Battery life | Dive Mode: Up to 27 hours Smartwatch: Up to 10 days (4 days always-on) Battery Saver Watch Mode: Up to 12 days GPS Only: Up to 20 hours All Satellite Systems: Up to 15 hours Max Battery GPS: Up to 44 hours Expedition GPS: Up to 10 days | 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 |
| Released | 2025 | 2023 |
Where the specifications differ
32 differences| Spec | Garmin Descent G2 | Garmin Fenix 7 Pro Sapphire Solar Edition |
|---|---|---|
| General | ||
| Battery life | Dive Mode: Up to 27 hours Smartwatch: Up to 10 days (4 days always-on) Battery Saver Watch Mode: Up to 12 days GPS Only: Up to 20 hours All Satellite Systems: Up to 15 hours Max Battery GPS: Up to 44 hours Expedition GPS: Up to 10 days | 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 |
| Display Size | 1.2" (30.4 mm) diameter | 1.3” (33.02 mm) diameter |
| Case material | fiber-reinforced ocean-bound plastic | fiber-reinforced polymer with titanium rear cover |
| Lens Material | sapphire crystal | Power Sapphire™ |
| Bezel Material | fiber-reinforced ocean-bound plastic | titanium |
| Memory/History | 4 GB | 32 GB |
| Charging method | Garmin proprietary clip charger | Garmin proprietary plug charger |
| Display resolution | 390 x 390 pixels | 260 x 260 pixels |
| QuickFit® watch band compatible | yes (22 mm) | included (22 mm) |
| Product Info | ||
| Main SKU | 010-02986-00 | 010-02777-10 |
| Product ID | 1558977 | 866191 |
| Product Name | Descent™ G2 | fēnix® 7 Pro – Sapphire Solar Edition |
| Release Date | 2/14/2025 | 6/1/2023 |
| Product Variation | Black with Black Band | Carbon Gray DLC Titanium with Black Band |
| Golfing Features | ||
| Measures shot distance (calculates exact yardage for shots from anywhere on course) | manual | automatic |
| Running Features | ||
| Ground contact time and balance | Yes | yes (GCT balance with accessory) |
| What You'll Love | ||
| Display type | AMOLED | Sunlight-visible, transflective memory-in-pixel (MIP) |
| Water rating | Dive (100 meters) | 10 ATM |
| Pulse Ox blood oxygen | yes (spot-check, during sleep, all day) | Yes |
| Battery life (smartwatch mode) | up to 10 days (4 days always-on) | Up to 18 days22 days with solar |
| Activity Profiles | ||
| Gym | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Jump Roping |
| Wellness | Walking, Pilates, Yoga , Indoor Walking | Walking, Pilates, Yoga, Indoor Walking |
| On the Water | Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Water Skiing, Wakeboarding, Wakesurfing, Tubing, Snorkeling, Whitewater | Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Sailing, Sail Racing, Water Skiing, Wakeboarding, Wakesurfing, Tubing, Snorkeling, Sailing Expedition, Whitewater |
| Snow & winter | Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing, Backcountry 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, Obstacle Racing | Running, Outdoor Track Running, Trail Running, Ultra Running, Obstacle Racing |
| Other activity profiles | Tactical, Inline Skating | Jumpmaster, Tactical, Inline Skating |
| Outdoor Recreation | ||
| Tides | Yes | yes (via Connect IQ™) |
| Daily Smart Features | ||
| Connectivity | Bluetooth® Smart, ANT+® | Bluetooth®, ANT+®, Wi-Fi® |
| Health & Wellness Monitoring | ||
| Sleep | Yes | yes (advanced) |
| Hydration | yes (in Garmin Connect™) | yes (in Garmin Connect™ and optional Connect IQ™ widget) |
| Fitness age | Yes | yes (in app) |
| Women's health | yes (in Garmin Connect™) | yes (in Garmin Connect™ and optional Connect IQ™ widget) |
The other 214 specifications both list are identical.
Full Garmin Descent G2 specifications →Full Garmin Fenix 7 Pro Sapphire Solar Edition specifications →