You seem to have covered everything. You could also add the few major countries that make movements and talk about each and it's quality: Switzerland, Japan, Russia maybe, etc. It's an important factor. Also perhaps include the metal from which the case is made out of. Stainless Steel, Titanium, Carbon, Gold-Plated, Solid Gold.
I'd lke to point out that 3 atm is almost as good as not waterproof. 5 atm is probably pretty safe to shower with. 10m you can swim with it. 20-30m you can snorkel/dive to a few meters.
https://www.thrillist.com/gear/what-your-watch-water-resistance-numbers-mean
Optionally you might want to look into watch functions. Date, calendar, moon phase, power reserve indicator, chronograph etc.
I'd lke to point out that 3 atm is almost as good as not waterproof. 5 atm is probably pretty safe to shower with. 10m you can swim with it. 20-30m you can snorkel/dive to a few meters.
https://www.thrillist.com/gear/what-your-watch-water-resistance-numbers-mean
Optionally you might want to look into watch functions. Date, calendar, moon phase, power reserve indicator, chronograph etc.