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Large 51 mm carbon gray smartwatch with black band and solar lens

Garmin

Garmin fenix 7X Pro Sapphire Solar 010-02778-10 51 mm smart watch

SKU CH-S7E2-QDCFC MPN 010-02778-10

Large 1.4 inch solar GPS smartwatch with 51 mm case, built-in LED flashlight and up to 37 days battery life in smartwatch mode

  • Screen size1.4 in (35.56 mm) diameter
  • Connection optionsANT+®, Wi-Fi®
  • Battery runtimeSmartwatch: Up to 28 days/37 days with solar* Battery Saver
  • Size51 × 51 × 14.9 mm Fits wrists with the following circumferen
  • Case size51 mm
  • Housing materialFiber-reinforced polymer with titanium rear cover
  • Solar charging extends smartwatch use to 37 days
  • Built-in LED flashlight adds visibility during night training
  • Multi-band GPS with SATIQ tracks position accurately
  • 32 GB storage holds maps and music offline
  • Health sensors monitor heart rate and blood oxygen

Product identity

The Garmin fenix 7X Pro Sapphire Solar is a 51 mm multisport GPS watch built for athletes and outdoor enthusiasts who need long endurance between charges. It runs on Android and iOS and stores up to 32 GB of maps, music and activity data.

Build and daily use

A fiber-reinforced polymer case with a titanium rear cover and scratch-resistant Power Sapphire lens protects the 1.4 inch transflective MIP touchscreen. The silicone band fits wrists from 127 to 210 mm while leather, fabric and metal options cover 135 to 225 mm. Built-in LED flashlight with variable intensities adds visibility for night training.

Upgrade perspective

Solar charging extends smartwatch mode to 37 days and GPS-only tracking to 122 hours, replacing devices that require daily charging. Multi-band GPS with SATIQ™ technology improves positioning where single-band receivers struggle. Buyers who need a smaller case diameter or weeks of battery without sunlight should consider other models.

How it compares

Measured against everything we stock in Smartwatches & Fitness Watches, at today’s prices. Recalculated every night.

Price $759.99
Pricier than about 99% of the 346 comparable items (median $82.49).
Screen size 1.4 in (35.56 mm) diameter
Lower than about 79% of the 226 comparable items (median 1.69 in).

Specifications

Product
Brand nameGarmin
Product lineFenix® 7X Pro – Sapphire Solar Edition
Part number010-02778-10
Product colorCarbon Gray
Product typeSmart Watch
Storage
Internal storage32 GB
Display
Screen size1.4 in (35.56 mm) diameter
Display resolution280 × 280 pixels
Display typeSunlight-visible, transflective memory-in-pixel (MIP)
TouchscreenYes
Connectivity
Connection optionsANT+®, Wi-Fi®
Wireless connectivityYes
Bluetooth supportBluetooth
Power
Battery runtimeSmartwatch: Up to 28 days/37 days with solar*
Battery Saver Watch Mode: Up to 90 days/1+ year with solar*
GPS Only: Up to 89 h/122 h with solar**
All Satellite Systems: Up to 63 h/77 h with solar*
All Satellite Systems + Multi-band: Up to 36 h/41 h with solar**
All Satellite Systems + Music: Up to 16 h
Max Battery GPS: Up to 213 h/578 h with solar**
Expedition GPS: Up to 62 days/ 139 days with solar*
*Solar charging, assuming all-day wear with 3 h per day outside in 50,000 lux conditions
**Solar charging, assuming use in 50,000 lux conditions
Size & build
Size51 × 51 × 14.9 mm
Fits wrists with the following circumference:
Silicone band: 127-210 mm
Leather Band: 135-213 mm
Fabric Band: 135-213 mm
Metal Band: 135-225 mm
Case size51 mm
Housing materialFiber-reinforced polymer with titanium rear cover
Product weight89 g (case only: 61 g)
Shipping weight0.21 kg
Package size305 × 254 × 254 mm
Compatibility
Compatible withAndroid / IOS
Supported platformsAndroid / IOS
In the box
Included itemsFenix 7X Pro – Sapphire Solar Edition
USB-C charging/data cable
Documentation

Questions about this item

What connectivity standards does the watch use and what do they limit?

It uses ANT+ and Wi-Fi for sensor pairing and data sync; Bluetooth handles phone notifications and music control.

What case and band dimensions determine whether the watch fits a wrist?

The case is 51 mm wide and 14.9 mm thick; silicone band fits 127–210 mm wrists, leather and fabric 135–213 mm, metal 135–225 mm.

How is the watch set up initially and which step is often missed?

Pair it with the Garmin Connect app on Android or iOS via Bluetooth, then enable Wi-Fi for automatic uploads; many skip the Wi-Fi step.

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