This product has clearly been developed without ever having come into contact with the smart watch it is designed for. It was probably made by looking the size of the screen up on the internet. The watch has a bevelled edge, which the screen protector does not allow for, so instead of fitting snugly in the correct place, the edges are raised and do not attach to the screen.
Wasted the first two trying to get them to fit - cut the third one smaller with scissors and the edges still don't stick down properly.
Currently looking for alternative screen protectors as my new smart watch now looks awful! Complete waste of money