Casio Edifice Four Dials EF-329D-7AV Mens WatchCasio Edifice Four Dials EF 329D 7AV Men's Watch Despite so many functions, it needs a battery change every three year or so, sometimes longer. Plus, this is a worthy break from the round shapes we are so much used to. Square is serious and attractive in its own way. The mineral glass gives a clear display of time and the whole watch gives a snug and comfortable fit to the wearer.