I use this to restore my Android TV box whenever it starts acting funky by keeping the ROM all set up and ready to go. It comes pre-formatted so dropping the ROM onto it and leaving it in my Android TV box makes it super convenient and I can completely restore it in a matter of minutes with my Kodi install all configured and ready to run.
It is a class 10 so file transfers are lightning fast. This would also work well in a phone or digital camera where you don't want the delay of slower class cards. Great product and I'll probably get the 128GB version to keep in my window projector for the Halloween and Christmas videos we play every year.