A file that cannot be opened on a MAC is a file with the extension “.pub” created by Microsoft Publisher.
If you are using Windows, you can use this Publisher to do layouts, etc., but it cannot be opened on Mac, and it is quite a problem if you receive a “.pub” file.
I found a website that allows you to convert such “.pub” files to PDF.
I use two types of chargers, one genuine Apple and one non-genuine, in different rooms.
However, if you use a non-genuine charger, it will take a very long time to charge, and the watch body, especially the part on the back where the charger is installed, will become extremely hot.
A while ago, my Watch got so hot that it froze and then restarted.
It’s convenient because you can charge it just by placing it with your iPhone, but I felt it was dangerous so I thought it would be better not to use it…
Apple’s genuine Apple Watch charger charges quickly, so it may be better to use only this charger.