What is there to patent there?
Have you actually seen an Apple Watch? Seriously, no insult intended. If you have ever gone through the masochistic effort of swapping out a band on a conventional watch, you know those satanic springs of which I speak. Those things that force you to scratch your beloved case, make you bleed, jump out of the band and onto the floor.
Now, ask any Apple rep to demonstrate the ease of swapping out an Apple Watch band. Push a button, slide out a metal insert. Slide the replacement insert into the watch until you hear a “click”. Takes seconds. Now, suddenly you can have different colored watch bands for “fashion” just as a gentleman may have different dress belts. Sport, Dress, casual. If that’s what you want - it’s available.
Look at the interface, the Digital Crown that NO ONE ELSE has- well, had.
That’s just a starter. Spend 5 minutes of your life in an Apple Store and see what the fuss is all about. Looking is free.
I have changed those. Grab a sewing pin with some vise-grips. This helps with the spring. I sure as heck will not buy an Apple watch just for ease of changing the watchband.