Graphite Watch and Graphite Milanese are PVD coated to prevent color from rubbing off and they can damage each other.
The Space Black is DLC coated and so was the Space Black Milanese loop and those could also scratch each other. This has been known since the Space Black Watch and matching Milanese were released back on the S3.
Raw SS micro scratches can be polished PVD/DLC cannot. Sapphire can scratch Sapphire. Diamond can scratch Diamond. Materials of the same hardness can scratch each other.
Nah no longer supported outside of security updates going forward.
WatchOS 10 is only compatible with iOS17 and up. Since your SE is still on 9 it's still compatible with iOS 16. WatchOS 10 removed the legacy support for past iOS versions.
Zero issues with my Series 4, I made a post about it.
Only charged it up to 87% before I left for the day. Battery health is at 77%, took this screen shot at 12:52 AM EST so just a little bit over 12 hours.
Full work day so lots of notifications, texting and two short 2 min phone calls. My Series 4 is still a workhorse even at 77% capacity. In theory if I charged it to 100% before leaving I should have around 27%.
Those with WatchOS 10 battery issues should consider unpairing and re-pairing because it's likely a rogue app/bug causing it.
Yep usually after an update and the OS indexes everything is back to business as usual. This happens basically all the time but they allow people to panic post here for some reason.
Have no fear, next update brings the swipe option back as an option.