How long does the battery last?

Garmin rates it up to 48 days in smartwatch mode with solar, dropping to roughly 28 days without enough sun. GPS mode runs about 60 to 90 hours depending on satellite settings.

Is the 51mm too big for a smaller wrist?

It is the largest Fenix 8 size, so it overhangs a narrow wrist and weighs noticeably more than the 43mm and 47mm versions. Try one on if sleep tracking comfort matters.

Does it work with iPhone and Android?

Yes. It pairs over Bluetooth with both, and Wi-Fi handles map and software updates. Calls and messages need the phone nearby or a paired network connection.

The watch, a silicone strap, and a charging/data cable. It charges with Garmin's proprietary cable, not USB-C on the watch side.

Is it worth it over the Fenix 7 or Epix Pro?

The Fenix 8 adds the speaker and microphone, the LED flashlight and a brighter AMOLED option. If you do not need voice features or the light, a discounted Fenix 7 or Epix Pro covers the same training and mapping.

Fenix watches tend to drop around Black Friday, Prime Day and when a successor is announced. At $1,121.99 at Walmart as of November 8, 2026, it is already near the bottom of its recent range.

Where is the Garmin Fenix 8 51MM Solar Smartwatch cheapest?

At Walmart, for $1,121.99, as of our latest check.

What do buyers say about the Garmin Fenix 8 51MM Solar Smartwatch?

Rated 4.3 out of 5 from 3 ratings.

Where can I buy the Garmin Fenix 8 51MM Solar Smartwatch?

4 stores we checked sell it, including Walmart, Best Buy, Newegg, eBay.

Garmin Fenix 8 51MM Solar Smartwatch

Best price now

$1,121.99at WalmartObserved at 5:51 AM

Compared across 3 stores. Prices are checked against each store and labelled with when.

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What reviewers say

Owners treat the Fenix 8 Solar as a do-everything adventure watch and praise its battery life, mapping and flashlight. The main complaints are size, price and occasional software quirks after launch.

What people mention

BatteryPraisedOwners report going weeks between charges, with solar topping up on long days outside.
SizeCriticisedThe 51mm case and silicone strap feel bulky, especially on smaller wrists and at night.
GPS accuracyPraisedMulti-band tracking holds a lock in dense trees and between buildings.
MapsPraisedPreloaded TopoActive maps and turn-by-turn directions get used heavily on hikes and rides.
SoftwareMixedMenus are deep and capable, but some owners hit bugs and a steep learning curve.
PriceCriticisedBuyers say it costs a lot more than the Epix Pro or Forerunner 965 for similar training features.

About the Garmin Fenix 8 51MM Solar Smartwatch

The Garmin Fenix 8 is a top-tier multisport GPS smartwatch engineered for serious athletes and adventurers who demand peak performance and durability. With its advanced Power Sapphire solar charging lens, the Fenix 8 offers an impressive battery life of up to 48 days, ensuring that you stay powered tough the most demanding activities. Its rugged, dive-rated design is built to withstand extreme conditions, meeting U.S. military standards for thermal, shock, and water resistance. Garmin Fenix 8 Power Sapphire solar charging lens, Multisport GPS Smartwatch excels in health and wellness tracking insights into your fitness and recovery. The Fenix 8 also includes a customizable morning report and training readiness metrics, helping you optimize your training sessions and maintain overall well-being. For navigation and mapping, the Fenix 8 utilizes SATIQ technology to deliver precise GPS tracking. It comes equipped with multi continent Topo Active maps, and turn-by-turn directions, ensuring you remain on course whether you're exploring remote trails, skiing in the backcountry, or golfing on more than 43,000 preloaded courses worldwide. The watch also boasts an integrated LED flashlight with variable light intensities, With built-in speaker and microphone capabilities, the Fenix 8 allows for hands-free calls, voice messaging, and offline voice commands, adding convenience and functionality. Its combination of rugged construction, advanced tracking features, and practical innovations make it the ideal companion for those who push their limits in every environment. Bundle Includes: Garmin Fenix 8 51MM Solar Sapphire, Carbon Gray DLC Titanium with Black/Pebble Gray Silicone Band Multisport GPS SmartwatchUSB type-c female adapterUSB Charging AdapterMicrofiber Cleaning Cloth P-Bank BatteryAir Pro TWS Truly Wireless EarBuds - (Color may vary)