Fenix 7x - Scratches on Sapphire Power Glass

in the material, there is the name glass.

like glass, it can be scratched by anything that is harder that it, like quartz, which is found in sand.

they can name it power x4ultrastrong or whatever, this is glass, and it will get scratched. It's just the expected sturdyness, and even if you take a saphire one, it can get scratched quite easily, or broken. It just require a bit harder materials.

For reference, this is links is about the mohs scale, that will tell you what is harder than glass :

https://en.wikipedia.org/wiki/Mohs_scale_of_mineral_hardness

for transparent materials, outside of diamond, there is not that much of luck, and nothing will be ever produced that is way harder than it is.

it's like goretex, it's MORE breathable than other stuff, but still, REALLY REALLY against evaporation. Better does not mean that it is good.

Power glass, is better than glass (maybe..), but still very weak against harder materials, like sapphire is.

same about titanium, it's FAR to be scratch proof, and a brick wall will always scratch it strongly. They can add a diamond like coating, it may be a bit stronger, but still very weak against the same brick wall.

all those marketing names are missleading about reality, they are fragile tool for their aspect, even if they can wisthand a lot of damage and still function, albeit not very nice looking then ;)

On the F6 this was just a water repelling coating, in the shower you get cool small droplets on the display.

I removed it with an electric toothbrush and grainy tooth paste. No more water droplets forming, but also no more visible scratches.

As per Garmin Product support, it would void the warranty if I use grainy tooth paste or fiber glass cloth. 

Your choice, you can get a used watch for a lower price as replacement that might have other issues and scratches as easy or you can fix your watch that you know works fine for now.

And I'll doubt anyone checks if the coating is still on there if you have to send it in for another issue.

So far my F7X Solar did not scratch, maybe the quality of the coating differs, my F6 was really sensitive in that matter.

My F6 after normal use where I can't recall anything to brutal, theoretically same use as my unscratched F5 before.

Same F6 after the toothbrush treatment.

No longer behaving like this in the shower anymore, but I don't care, glass looks fine again.

Looks like slightly damaged AR Coating. Thats not the glass itself. But why arent you using an screen protection? 

People don't by sapphire to put a weaker screen protection on it. :D

But the coating will be still alive

Garmin does not recommend screen protector and it may void the warranty of the device.

Can I Use an Anti-Glare Screen Protector? | Garmin Customer Support

Quick Update - As per Garmin Product team, these kind of scratches on "scratch resistant" Power Sapphire is considered as cosmetic damage and not covered by the warranty. I can get a replacement for $270.