Garmin
Epix Pro Gen 2 51mm vs Fenix 7X Pro Solar
Size, specs & wrist fit compared
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Which one fits you
Both need much the same wrist — roughly 54–73mm across the flat of the wrist. Neither will fit where the other won't, so decide on thickness, weight and features instead.
The Epix Pro Gen 2 51mm and Fenix 7X Pro Solar share a near-identical 51mm case, so wrist presence comes down to thickness, lug-to-lug and weight.
On the wrist the Fenix 7X Pro Solar feels lighter (96g vs 98g, case only).
The Epix Pro Gen 2 51mm is thinner than 90% of the 48 51mm watches we hold thickness for, the Fenix 7X Pro Solar than 90% — so both wear flatter than their widths suggest.
The Epix Pro Gen 2 51mm is 2g heavier than the Fenix 7X Pro Solar. Both are circular.
Epix Pro Gen 2 51mm
Fenix 7X Pro Solar
Switch or add watches
Garmin
Epix Pro Gen 2 51mm
Garmin
Fenix 7X Pro Solar
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist.
- Garmin Epix Pro Gen 2 51mm51mm · 14.9mm thick
- Garmin Fenix 7X Pro Solar51mm · 14.9mm thick
3D preview
Epix Pro Gen 2 51mm vs Fenix 7X Pro Solar on a wrist
Sized to your own wrist, turned any way you like.
Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.
Battery life compared
Furthest apart in GPS mode, where the Fenix 7X Pro Solar lasts 4.1× as long as the Epix Pro Gen 2 51mm (5.1 days against 30 hours).
Epix Pro Gen 2 51mmFenix 7X Pro Solar
Smartwatch
31 days37 daysGPS
30 hours122 hoursTraining
17 hours16 hours
Specifications
The short version
10 key specs| Spec | GarminEpix Pro Gen 2 51mm | GarminFenix 7X Pro Solar |
|---|---|---|
| Case Width | 51mm | 51mm |
| Thickness | 14.9mm | 14.9mm |
| Weight | 98g | 96g |
| Shape | Circular | Circular |
| Water Resistance | 10 ATM | 10 ATM |
| GPS | Yes | Yes |
| Display type | OLED/AMOLED | LCD |
| Screen size | 1.4 inches | 1.4 inches |
| Battery life | 31 days | 37 days |
| Released | 2023 | 2023 |
Every specification
116 specs| Spec | Garmin Epix Pro Gen 2 51mm | Garmin Fenix 7X Pro Solar |
|---|---|---|
| Design | ||
| width | 51 | 51 |
| height | 51 | 51 |
| volume | 38.75 cm³ | 38.75 cm³ |
| weight | 98 g | 96 g |
| thickness | 14.9 | 14.9 |
| ATM rating | 10 ATM | 10 ATM |
| resolution | 454 x 454 px | 280 x 280 px |
| screen size | 1.4 inches | 1.4 inches |
| Display type | OLED/AMOLED | LCD |
| Has a display | Yes | Yes |
| pixel density | 452 ppi | 282 ppi |
| width of band | 26 mm | 26 mm |
| water resistance | Waterproof | Waterproof |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | Yes |
| is designed for kids | No | No |
| waterproof depth rating | 100 m | 100 m |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | No | No |
| has branded damage-resistant glass | Yes | No |
| Battery | ||
| battery life | 31 days | 37 days |
| has wireless charging | No | No |
| has a removable battery | No | No |
| battery life with GPS on | 30 hours | 122 hours |
| Has a solar power battery | No | Yes |
| has a rechargeable battery | Yes | Yes |
| battery life in training mode | 17 hours | 16 hours |
| Sensors | ||
| has GPS | Yes | Yes |
| has a compass | Yes | Yes |
| Has a barometer | Yes | Yes |
| has a gyroscope | Yes | Yes |
| has an accelerometer | Yes | Yes |
| Monitors perspiration | Yes | No |
| Has a heart rate monitor | Yes | Yes |
| Has a temperature sensor | Yes | Yes |
| Monitors blood oxygenation levels | Yes | Yes |
| Has a cadence sensor | — | No |
| Features | ||
| release date | 2023-05-31 | 2023-05-31 |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | No | Yes |
| warranty period | 1 years | 1 years |
| Has call control | Yes | Yes |
| Has silent alarm | Yes | Yes |
| has HRV tracking | Yes | Yes |
| internal storage | 32GB | 32GB |
| measures VO2 max | Yes | Yes |
| Has notifications | Yes | Yes |
| Has ECG technology | Yes | Yes |
| Locates your phone | Yes | Yes |
| has fall detection | Yes | Yes |
| has voice commands | No | No |
| Acquires GPS faster | Yes | Yes |
| Has vibrating alerts | Yes | Yes |
| shows readiness level | Yes | Yes |
| Can be used to answer calls | No | No |
| measures resting heart rate | Yes | Yes |
| has irregular heart rate warnings | Yes | No |
| has fast/slow heart rate notifications | Yes | Yes |
| Has a built-in camera remote control function | No | No |
| Connectivity | ||
| has NFC | Yes | Yes |
| supports ANT+ | Yes | Yes |
| supports Wi-Fi | Yes | Yes |
| supports Galileo | Yes | Yes |
| has a cellular module | No | No |
| Is compatible with iOS | Yes | Yes |
| Is compatible with Android | Yes | Yes |
| Miscellaneous | ||
| Has auto pause | Yes | Yes |
| Available on PC | Yes | Yes |
| Can upload maps | Yes | Yes |
| Has trackback mode | Yes | Yes |
| Has a wind speed sensor | No | No |
| Is compatible with Windows | Yes | Yes |
| Is compatible with Mac OS X | Yes | Yes |
| has an external memory slot | No | No |
| Compatible with smart scales | Yes | Yes |
| has a battery level indicator | Yes | Yes |
| Provides the sunrise/sunset time | Yes | Yes |
| has a socket for a 3.5 mm audio jack | No | No |
| Informs about the risk of thunderstorms | Yes | Yes |
| Compatible with external heart rate monitors | Yes | Yes |
| App & Software | ||
| Ad-free | Yes | Yes |
| Free app | Yes | Yes |
| Tracks BMI | Yes | Yes |
| Has coaching | Yes | Yes |
| Includes maps | Yes | Yes |
| Supports routes | Yes | Yes |
| Has achievements | Yes | Yes |
| Has goal setting | Yes | Yes |
| Has live tracking | Yes | Yes |
| Has exercise diary | Yes | Yes |
| Predicts ovulation | Yes | Yes |
| Can be personalised | Yes | Yes |
| Has weight tracking | Yes | Yes |
| Predicts start date | Yes | Yes |
| Tracks water intake | Yes | Yes |
| Has inactivity alerts | Yes | Yes |
| Has period notifications | Yes | Yes |
| Has temperature tracking | Yes | Yes |
| Doesn’t require account | No | No |
| Provides activity reports | Yes | Yes |
| Displays fertile window notifications | Yes | Yes |
| Counts how many calories you've burned | Yes | Yes |
| Activity tracking | ||
| Measures pace | Yes | Yes |
| Tracks distance | Yes | Yes |
| Tracks elevation | Yes | Yes |
| Designed for golf | Yes | Yes |
| Tracks your sleep | Yes | Yes |
| Tracks steps taken | Yes | Yes |
| Designed for diving | No | No |
| Has a route tracker | Yes | Yes |
| Has exercise tagging | Yes | Yes |
| Has multi-sport mode | Yes | Yes |
| Tracks calorie intake | Yes | Yes |
| Provides sleep reports | Yes | Yes |
| Detects activities automatically | Yes | Yes |
| Has a stroke counter for swimming | Yes | Yes |
Wrist Fit
Garmin Epix Pro Gen 2 51mm
Sits best on wrists ~54–73mm wide (≈ 14.4–19.5cm circumference).
Garmin Fenix 7X Pro Solar
Sits best on wrists ~54–73mm wide (≈ 14.4–19.5cm circumference).
Frequently Asked Questions
Is the Garmin Epix Pro Gen 2 51mm bigger than the Garmin Fenix 7X Pro Solar?
Both have a 51mm case. Compare their thickness and lug-to-lug above to judge wrist presence.
Which fits a smaller wrist better, the Garmin Epix Pro Gen 2 51mm or the Garmin Fenix 7X Pro Solar?
The Garmin Epix Pro Gen 2 51mm suits wrists around 54–73mm wide, and the Garmin Fenix 7X Pro Solar around 54–73mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Garmin Epix Pro Gen 2 51mm and Garmin Fenix 7X Pro Solar side by side at true scale?
Yes — the schematics and photos above show both watches at matched scale, and our fit tool overlays each on your wrist width.