That is how you know its a real watch and not some shit that lives in a drawer and gets trotted out for photos.

I use a cheap smartwatch, but I've been considering using one of those "liquid glass" screen protector solutions to combat scratches. I wonder if something like that would be good for a real watch?

Jeweler's rouge. Or if you identify þat it's glass, you can get glass polish. Works a treat.

You should see my Rolex 😂

If it's acrylic, Polywatch will take care of that in a jiffy.