Garmin Fenix 6 models vs Forerunner 945. Which one is better?

I ran into this question when I was looking for a Garmin watch. I was looking for a watch mainly to motivate myself to run, so the Forerunner 945 was a logical choice at first. But only some things are so simple. Therefore, I decided to share my comparisons and observations with you.

Short answer

The Garmin Fenix 6 is Garmin’s flagship, it may not be the latest model, but it has all the same features as the Forerunner 945, just with different build materials. The Garmin Fenix 6 series watches are slightly better. But it all depends on the desire and need.

General differences between Fenix 6 and Forerunner 945

I’ll review the main differences below and then cover why I chose the Garmin Fenix 6 X pro over the Forerunner 945. Below you will see a table comparing Garmin Fenix 6s, Fenix 6, Fenix 6x vs Garmin Forerunner 945.

Garmin Fenix 6Forerunner 945
Screen Lens MaterialCorning® Gorilla® Glass DX or Sapphire CrystalCorning® Gorilla® Glass DX
Bezel Materialstainless steel, titanium or Diamond-like Carbon (DLC) coated steelfiber-reinforced polymer
Case materialFiber-reinforced polymer with metal rear coverFiber-reinforced polymer
Strap materialsilicone, leather, titanium or nylonsilicone
Physical sizeFenix 6s – 42 x 42 x 13.8 mm
Fenix 6 – 47 x 47 x 14.7 mm
Fenix 6X – 51 x 51 x 14.9 mm
47 x 47 x 13.7 mm
Display SizeFenix 6s – 1.2” (30.4 mm) diameter
Fenix 6 – 1.3” (33.02 mm) diameter
Fenix 6X – 1.40″ ( 35.56 mm) diameter
1.2″ (30.4 mm) diameter
Display ResolutionFenix 6s – 240 x 240 pixels
Fenix 6 – 260 x 260 pixels
Fenix 6X – 280 x 280 pixels
240 x 240 pixels
WeightFenix 6s – Steel: 61 g – case with silicone band (case only: 44 g);
Fenix 6 Steel: 83 g – case with silicone band (case only: 60 g);
Titanium: 72 g – case with silicone band (case only: 49 g)
Fenix 6X Steel: 93 g (case only: 66 g).
50 g
Water rating10 ATM5 ATM
Battery lifeFenix 6s – Up to 9 days.
Fenix 6 – Up to 14 days.
Fenix 6X – Up to 21 days.
Up to 14 days.

So which one is better?

It would be fairest to compare the Garmin Forerunner 945 with the Garmin Fenix 6 version, as they are the most similar in size and battery life.

The Garmin Fenix 6 is a more rugged watch than the Forerunner 945 and has sapphire and DLC coating. Fenix 6 also has a larger screen and double the memory. But these pluses come with their minuses, which would be – higher price and higher weight. And knowing how important the weight of the watch is for runners can be a deal breaker.

My recommendations

Garmin Forerunner 945

Fenix 6 vs Forerunner 945

If the watch will only be used for running and you won’t use it for hiking or other environments that require a more rugged watch, then I would choose the Forerunner 945 watch. Because saving from 100 to 500 USD is quite a lot.

Garmin Fenix 6

fenix 6 vs forerunner 945

But if you run in the most varied conditions, do the most extreme hikes, and you need Sapphire glass or DLC coating, in such a case, the choice is clear – Garmin Fenix 6.

Why did I choose Garmin Fenix 6X Pro?

garmin fenix 6x pro on 180 mm wrist

I have quite a big wrist (180 +- mm). Which automatically makes the Fenix 6 and Forerunner 945 a little too small for my wrist. It’s not that I can’t wear it, but it’s not as comfortable as the Garmin Fenix 6x Pro.

Also, I wanted the largest possible battery that the Fenix 6 series could offer. I have run a lot of kilometers with Fenix 6x Pro, and it does not cause any discomfort due to the weight watch when running.

But maybe it is because of my larger wrist, but I always wear bigger watches which always weigh much more. Therefore, I’m just used to the rather considerable weight of the watch (Before I had Suunto 9 Baro).

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If the weight of the watch is very important to you, choose the Garmin Forerunner 945, which has almost all the same functions as the Fenix 6.

But if you are looking for something other than the lightest watch, I recommend choosing the Garmin Fenix 6 watch, which is Garmin’s Flagman and has more rugged materials.

After all, both watches are very good, which I think will satisfy all your needs.


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