Galvanic corrosion ss band and aluminum case
3 years ago I bought an Apple Watch 3 with a Milanese loop, and thankfully I also bought the extended warranty.
Two years later, the watch was replaced under warranty, because the bottom was getting corroded.
After 1 year and 2 months the same problem has occurred, and of course now I no longer have coverage.
I think it is an improvement that Apple is not offering the steel band with the Apple Watch 6 Nike edition.
The same needs to be done with all Aluminum watches, or at very least, when you "create your style" a warning could appear that combining different metals is not recommended and may lead to corrosion.
Regards