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Garmin Forerunner 945 vs Fenix 6 (2021): Which Fitness Watch Is The Better Pick?

All fitness enthusiasts have the same goal–to do better than they did yesterday. If you can relate, then one of the best ways you can help yourself is by getting a fitness watch–one that can keep track of your activities and provide you with a wealth of helpful data about your performance. If you’re on the lookout for one, you’re in luck because Garmin recently updated its Forerunner and Fenix ranges. Both the Garmin Forerunner 945 and the Fenix 6 have amazing features that can help make your fitness journey a successful one, although you do need to choose wisely because they come with some differences. To help you pick out the best fitness watch for you, here’s an in-depth comparison of the Garmin Forerunner 945 and the Fenix 6.

Garmin Forerunner 945 vs Fenix 6 Comparison Chart

ModelGarmin Forerunner 945Garmin Fenix 6
 Garmin 010-02063-00 Forerunner 945, Premium GPS Running/Triathlon Smartwatch with Music, BlackGarmin fenix 6, Premium Multisport GPS Watch, Heat and Altitude Adjusted V02 Max, Pulse Ox Sensors...
PriceCheck PriceCheck Price
Strap MaterialSiliconeSilicone, leather, titanium, or nylon
Bezel / Case MaterialFiber-reinforced polymerStainless steel, titanium, or DLC-coated titanium
Size of Display1.2″Regular – 1.3″
6X model – 1.4″
6S model – 1.2″
Type of DisplaySunlight-visible, transflective memory-in-pixelSunlight-visible, transflective memory-in-pixel
Display Resolution240 x 240 pixelsRegular – 260 x 260 pixels
6X model – 280 x 280 pixels
6S model – 240 x 240 pixels
Battery Life14 days (36 hours on GPS mode)14 days (36 hours on GPS mode)
Battery Saving FeaturesNoYes
Water-Resistance5ATM10ATM
Dimensions47 x 47 x 13.7mmRegular – 47 x 47 x 14.7mm
6X model – 51 x 51 x 14.9mm
6S model – 42 x 42 x 13.8mm
Weight50g58 – 93g (depends on model)

Design

The Garmin Forerunner 945 and the Fenix 6 are different when it comes to materials and sizes.

The Forerunner 945 (left) is made of plastic and has a sleeker look while the Fenix 6 (right) is made of metal and has a rugged vibe.

While both the Forerunner 945 and the Fenix 6 are fitness watches, their designs couldn’t be more different. When it comes to materials, the Forerunner 945 is made of fiber-reinforced polymer while the Fenix 6 comes in more varieties. You can have it either in titanium, titanium coated in diamond-like carbon, or stainless steel, all of which are premium materials. Because the Forerunner 945 is made of plastic while the Fenix 6 is made of metal, the former has a sleeker look while the latter gives off a more rugged and industrial vibe. Also, the Fenix 6 is the heavier option of the two, weighing between 58 and 93g depending on the material of your choice. The Forerunner 945 is only at 50g.

It’s also worth noting that the Fenix 6 is offered in different sizes. There’s the regular variant which measures in at 47mm, but you can also go for either the S or the X variations, depending on the width of your wrist. As for the Forerunner 945, it’s only offered in one size which measures in at 47mm. Another difference between the two models is screen size. The Fenix 6’s regular size has a 1.3-inch screen while the Forerunner 945’s display is smaller by 0.1 inch. While the size difference isn’t all that big, it does mean that you’re able to enjoy better pixel density with the Fenix 6 (260 by 260) than with the Forerunner 945 (240 by 240).

The Forerunner 945 and the Fenix 6 are also different when it comes to water resistance, able to withstand 5ATM and 10ATM respectively. This shouldn’t matter too much though because both should be good enough for most users.

Activity Tracking Features

The Forerunner 945 and the Fenix 6 are more or less the same when it comes to features.

Both the Forerunner 945 (left) and the Fenix 6 (right) provide 18 Firstbeat metrics.

It doesn’t matter if you’re into yoga, swimming, tennis, or football–both the Forerunner 945 and the Fenix 6 will be able to track your performance and provide you with helpful physiological insights. Garmin is, after all, revered as the leader in the fitness watch industry. While both models are pretty much neck and neck when it comes to activity tracking, that wasn’t always the case. The Forerunner 945 was actually ahead of the Fenix range in terms of features, although all of that changed when the Fenix 6 entered the picture. Now, they’re more or less comparable to each other.

Both the Forerunner 945 and the Fenix 6 offer 18 Firstbeat metrics, namely: Calories Burned, Quick Stress Level Test, Real-Time Performance Condition, Workout Labels, All-Day Stress and Recovery, Body Resources, Anaerobic Training Effect, Training Load, Recovery Time Advisor, Heat and Altitude Acclimitization, Race Predictor, Training Status, Respiration Rate, and Training Load Balance. Not to mention they’re also equipped with new Garmin features such as Incident Detection and Assistance and Body Battery.

While they are quite similar in terms of features, they do come with some differences, although it’s a short list. First off, the Fenix 6 is the first Garmin watch to have something called Dynamic PacePro. Basically, you set a goal for yourself and your Fenix 6 watch will then coach you all throughout your run and tell you whether you should slow down or speed up based on the terrain. Unfortunately, you can’t enjoy this feature with the Forerunner 945. There are some minor differences between the two models as well when it comes to gym activity profiles, run profiles, and outdoor recreation profiles.

Battery

The Fenix 6 has features that allow you to extend its battery life.

Both the Forerunner 945 and the Fenix 6 have 14 days of battery life, although the latter has features that let you extend it.

On the surface, you could say that the Forerunner 945 and the Fenix 6 have the same battery life as both are able to run for 14 days on a single charge. On GPS mode, the battery life on both models goes down to 36 hours. If you do, however, delve deeper into the Fenix 6’s advanced battery features, you’ll be able to squeeze quite a bit more juice out of it.

With the Fenix 6, you’re given access to power management options and so you can customize which features you’d like to keep running and which ones you’d like to turn off. You can also see which features are draining your battery the most and so you can choose to turn them off if you want to extend your battery life. What’s great is that you can do this in the middle of a workout when you’re running low on battery.

That said, it doesn’t mean that you should completely dismiss the Forerunner 945. After all, 2 weeks is pretty impressive for a sports watch. It’s just that with the Fenix 6, there are easy ways to prolong its battery life. Also, you could go for the Fenix 6X Pro which runs on solar power. Designed with solar strips, it charges on the go, allowing you to enjoy an extended battery life.

Verdict

The Fenix 6 is the better pick given that it’s more advanced in features but has the same price as the Forerunner 945.

There’s no doubt that both of these Garmin models will be able to serve you well in your fitness journey. That said, they do have some crucial differences that you need to take into consideration. When it comes to design, you should go for the Forerunner 945 if you want to sport a watch that’s sleek and isn’t too heavy on the wrist. As for the Fenix 6, it’s a good pick for you if you’re into the rugged, industrial look and you don’t mind a bit of heft.

As for activity tracking features, they’re pretty much the same, although you do get a bit more with the Fenix 6. It boasts Garmin’s Dynamic PacePro feature which brings you a step closer to your running goals. They’re also similar in terms of battery life, but again, the Fenix 6 has a slight advantage, boasting of features that will allow you more hours of usage. Given that they’re sold for the same price (around $600), it might be smarter to go with the Fenix 6 since it’s slightly more advanced when it comes to activity tracking and battery life.

FAQs

๐Ÿ“Œ How are the Garmin Forerunner 945 and the Fenix 6 different in terms of design?

Because the Forerunner 945 is made of plastic while the Fenix 6 is made of metal, the former has a sleeker look while the latter gives off a more rugged and industrial vibe. Also, the Fenix 6 is the heavier option of the two, weighing between 58 and 93g depending on the material of your choice. The Forerunner 945 is only at 50g.

๐Ÿ“Œ Which one has better activity tracking features, the Garmin Forerunner 945 or the Fenix 6?

They’re more or less comparable to each other, although the Fenix 6 has a slight advantage. Equipped with Garmin’s Dynamic PacePro feature, it will coach you all throughout your run and will tell you if you need to go faster or slower based on the terrain.

๐Ÿ“Œ Which one has better battery life, the Garmin Forerunner 945 or the Fenix 6?

While both are able to run for 14 days on a single charge, the Fenix 6 has features that allow you to get more use out of it. It gives you access to power management options, allowing you to customize which features you’d like to keep running and which ones you’d like to turn off. You can also see which features are draining your battery the most and so you can choose to turn them off if you want to extend your battery life.

๐Ÿ“Œ Which one should you choose, the Garmin Forerunner 945 or the Fenix 6?

Given that they’re sold for the same price, it might be smarter to go with the Fenix 6 since it’s slightly more advanced when it comes to activity tracking and battery life.

Last update on 2021-07-19 / Affiliate links / Images from Amazon Product Advertising API

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Denise Jose

Senior Editor at Compare Before Buying. Researcher and yoga teacher passionate about article writing, photography, wellness, and mindfulness.