Garmin Forerunner 645 vs 935 vs 945 Compared

Featured in this comparison are three fitness-focused GPS smartwatches for serious fitness enthusiasts; the Garmin Forerunner 645 vs 935 vs 945 – which is the best? While the Forerunner 945 is a premium and more equipped smartwatch featuring more features, the Forerunner 645 and 935 are nice cheaper alternatives.

Note that the Forerunner 645 comes in two editions; Forerunner 645 and 645 Music. The Music edition allows you to load music onboard the watch which you can listen to offline via a Bluetooth headset. It also features incidental fall detection not present in the non-music edition. Featured in this comparison chart is the Forerunner 645 music edition.

Garmin Forerunner 645 vs 935 vs 945: Specifications Compared

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Garmin Forerunner 645 vs 935 vs 945: Fitness Tracking Features

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Garmin Forerunner 645 vs 935 vs 945: Battery Life

Which is Better?

Although these three have a lot of features in common, there are slight differences which are stated below;

• While the Forerunner 645 has a stainless steel bezel, the Forerunner 945 and 935 have bezels made of fiber-reinforced polymer.
• The glass types also differ, while the Forerunner 935 has a chemically strengthened glass, the 645 has a Corning Gorilla Glass 3, while the 945 has a more advanced Corning Gorilla Glass DX.
• The Forerunner 645 music is equipped with about 4GB capacity that allows you to load music into the watch. The Forerunner 945 comes with twice bigger 8GB storage that lets you load even more of your favorite tracks from popular music services. Meanwhile, the 935 lacks onboard music support.
• When your phone is nearby, the Forerunner 645 and 945 can detect a hard fall and will automatically start a call on your phone. This isn’t possible with Forerunner 935.
• Forerunner 945 features Pacepro that offers pace guidance to help you stay on track during training. This is not available on Forerunner 645 and 935.
• The Forerunner 645 and 945 are both equipped with an NFC chip that enables Garmin Pay which will allow you to make payments from the watch.
• The Forerunner 945 features preloaded TOPO and road/trail maps with Trendline Popularity Routing. It also features a routable cycling-specific street map.
• The Forerunner 945 is also preloaded with 42000 golf courses as well as equipped with more golfing tools.
• The Forerunner 935 and 945 can track both indoor and open water metrics such as distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), and calories, while the 645 can only track indoor swimming metrics.
• The Forerunner 945 can track your heart rate underwater. The 935 and 645 lack underwater heart rate tracking.
• The Forerunner 935 and 945 have about two weeks of battery life, this is twice of about 7 days with the Forerunner 645.

Bottom line, the Forerunner 945 is a far more equipped smartwatch than its predecessor and the Forerunner 645. It features maps, higher music storage, and more activity tracking features.

On the flip side, the Forerunner 645 Music and 935 are cheaper alternatives.

Garmin Forerunner 945 vs Fenix 5X Plus

Featured in this comparison chart are two of Garmin’s finest multisport GPS smartwatches; the Garmin Forerunner 945 and Fenix 5X Plus. While the Forerunner 945 succeeds 935, the Fenix 5X Plus is succeeded by the Fenix 6X Pro which is one of the members in the Fenix 6 Series. Each of these two is an outstanding smartwatch; durable, loaded with lots of activity tracking features, and equipped with long battery life. Compare these two fantastic GPS smartwatches to find out the differences.

Garmin Forerunner 935 vs 945 vs Fenix 5X Plus: Specifications Compared

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Garmin Forerunner 945 vs Fenix 5X Plus: Fitness Tracking Features

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Garmin Forerunner 945 vs Fenix 5X Plus: Battery Life