The Garmin Forerunner 645 and the Garmin Forerunner 945 are two intelligent Garmin watches known for their musical characteristics. The fact that the two watches within the Forerunner range are comparable often leads to consumer disappointment when choosing the best choice. Both watches are known for their complex and attractive design and long battery life, but a watch has many features that can put it at the top of the list.

Both functions have advanced settings for heart rate, incident detection and activity monitoring. The main difference is that the Forerunner 945 looks more like a men’s watch, while the Forerunner 645 has a unisex design.

Both Forerunner smartphones score high on all major fitness monitoring reviews. This article covers everything you need to know about both products, emphasizing the differences between the watches. Read on to find out more and find out what best suits your needs.

What is the difference between Garmin 645 and 945?

When you sit next to each other on the two bells, you immediately notice the differences. Forerunner 945 is more human-centred in its design. The 945 easel is larger and rounder with a strong black color; the 645 is lighter and has a full color palette around the frame and beam.

Garmin Forerunner 645 is not as scratch resistant as Forerunner 945 with dx gorilla angle glass, which surprisingly surpasses the design specifications of Forerunner 645 with a less durable 3-angle gorilla glass.

Both watches have the possibility to synchronize music. Unlike other Forerunner models, both Forerunner 645 and Forerunner 945 allow you to sync your music with the music storage system built directly into your phone’s software. You can sync your Spotify playlist or choose to use the scheduled playlist specification when you’re on the go and don’t have time to sync your favorite songs to the music storage portal.

Both clocks can be marked as GPS clocks, but Forerunner 945 has more course maps. Forerunner 945 allows you to customize maps and routes using the Glonass and Galileo GPS protocols, allowing you to track your route in a wider variety of environments and terrains than traditional GPS technology allows. The mapping technology is both colorful and interactive, so you can get more detailed and visually attractive routes based on your location.

Distinguishing signs

The Garmin Forerunner 645 looks more like the Garmin Forerunner 245. There’s a multi-function GPS mode, but it’s more of a GPS mode without music, while the Garmin Forerunner 945 has a GPS mode with music.

Both watches have pulse ox data. Like most models in the Garmin Forerunner series, both the Garmin Forerunner 945 and Garmin Forerunner 645 use pulse oximetry data to analyze heart rate, condition, and heart rhythm to determine variability for different power types. This feature allows you to evaluate in real time how you work during your training and how long you can keep working before you reach different thresholds.

There is a big difference between the two models in the number of pre-installed activity profiles. Forerunner 945 is designed for a wide range of multi-sport and triathlon events.

Innovative and detailed activity profiles have now been extended to include swimming, running, cycling and triathlon, which are part of the range of profiles you can choose from for this model. This template also contains some recommendations if you want ideas for customizing your fitness program, while the Garmin Forerunner 645 only offers a few recommendations that are available through the Garmin Coach feature.

The last big difference between the Garmin Forerunner 645 and the Garmin Forerunner 945 is the number of different activities that are possible between them. Simply put: The Garmin Forerunner 945 is perfect for triathletes. This model is designed for users who want to know that their Smartwatch is capable of tracking a variety of triathlon performance when needed.

With updated and improved heart rate, ground contact time and stride length, and all functions synchronized with accurate heart rate and power statistics, Garmin Forerunner 945 goes beyond the basic performance monitoring features of Garmin Forerunner 645.

Garmin 645 and 945 Comparative tables

There are many small differences between the two models, which are taken into account in this practical comparison table. Use these sections to quickly compare the two models before deciding which model is better.

Hardware equation

Garmin Forerunner 645 vs. 945 – What’s better?

For many fitness enthusiasts, the choice of the best model depends on many factors. Just like Garmin Forerunner 245 Garmin Forerunner 645 Music overrides advanced music functions.

However, with the same variable, Garmin Forerunner 945 which also contains many music improvements for Forerunner 245 Music and Garmin Forerunner 645 Music. So what is the determining factor between these two models?

Battery life is one of the deciding factors, and Forerunner 945 has a shorter lifespan than the Garmin Forerunner 645 Music. Unfortunately Forerunner 945 cannot cope with the life of the batteries, certainly not compared to the 7 days you can get with Forerunner 645. However, this is to be expected because Forerunner 945 has been upgraded with more excellent properties.

Another negative point against Forerunner 945 is that it does not work well with other applications. One of the useful features of some smartphones is the ability to customize the watch with other applications that follow your jog or run as you wish. With Forerunner 945, all you have to do is use its functions.

But even with these minor drawbacks, the Garmin Forerunner 945 certainly seems to be the best choice between two models.

Forerunner Garmin 945 – best choice

The Garmin Forerunner 945 outperforms the Garmin Forerunner 645 in terms of available features and attractive design. The Garmin Forerunner 945 features many new updates compared to the previous models. On the one hand, the design of the watch itself has completely changed from a more square to a round shape with new displays of the on-screen buttons, more in line with traditional smart watches and well calibrated to cope with the influx of new functions.

Forerunner 945 achieves another victory in performance monitoring. Heat and altitude sensors, pulse oximeter technology, a powerful pulse oximeter with pulse oximeter and an advanced extension of GPS technology make this model the ideal solution for any workout.

The heart rate monitor of Forerunner 945 is best suited to measure the oxygen level in the blood along the vo2 max indication line, as shown in Garmin Phoenix 6 (see overview). A pulse oximeter, also known as a pulse oximeter, is an incredible way to control activity by measuring the oxygen level in the blood at each stage of the workout.

Many of these stress and fitness monitoring functions are simply not found in the Garmin Forerunner 645.

In addition, this model is available in two sizes, 42 or 39 mm. Not all runners want a bulky and cumbersome watch, even if the display is the same size, which works well with different types of functions compatible with this model.

By comparison: The Forerunner 645 is smaller and there are not really options for fitness enthusiasts who want a bigger watch. However, the Forerunner 645 is more compatible as a unisex model, while the Forerunner 945 is suitable for men.

In addition, Forerunner has 945 push buttons so you do not have to go through the application to change settings. Unlike Forerunner 645, you can now change settings and preferences at the touch of a button.

With five convenient dials, you can navigate through the menu and set the clock to the desired settings with just a few clicks. This model does not allow you to split complex models, you will probably have a routine migration down after a session. Forerunner 645 is heavily dependent on the Garmin Connect application, which means that notifications and basic functionality must come from a secondary device.

The Garmin Forerunner 945 is equipped with many additional features and an improved watch design. With numerous add-ons to measure training effect, recovery time, distance performance and race prediction for triathlon, Forerunner 945 outperforms Forerunner 645.

Equation of performance

Want to buy a Garmin 645 or 945 GPS? racing watch

In terms of price, the Forerunner 945 is a more expensive GPS. However, if you want a GPS watch based on the functions visible in Forerunner,  the model 945 is certainly the best investment.

The Forerunner 945 is designed to enhance the previous exclusions from this popular Garmin line, and in that sense the Forerunner 945 is a great investment because it’s probably the only Forerunner model you’ll ever need.

Frequently asked questions

Q: Want to buy 645 or 945 for triathlon training?

If you’re a triathlete, the Garmin Forerunner 945 is the best choice for you. The Garmin Forerunner 945 is designed for users who want to know that their smart watch can track different triathlon performance when needed.

V: Do the Garmin have 645 and 945 cards?

Both Garmin Forerunner 645 and Garmin Forerunner 945 have access to the cards. Forerunner 945 is better everywhere because it offers full-color cards available with a Wi-Fi connection. You can also create and edit useful routes with Forerunner 945.

V: Garmin 645 and 945 waterproof ?

Both the Garmin Forerunner 945 and Garmin Forerunner 945 are waterproof to a depth of 50 metres, so you can shower or even swim safely with both models. Be careful not to immerse the watch fully in water deeper than 50 meters as high pressure may damage the watch.

V: Does this watch work with Spotify Music?

With Garmin Connect, you can now use your Spotify account to access Wi-Fi sync with Garmin Forerunner 945 and Forerunner 645. You can easily play your desired Spotify playlists directly under your supervision.

V: Can you follow a round of golf with 645 and 945?

You can play golf with the Garmin Forerunner 945. Unfortunately, this feature is not available on the Garmin Forerunner 645.
Check the Garmin golf simulator as well!

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