Two important changes you want to make sure to notice are the case and the crown The former is a bit thicker and the latter was upsized from 5.3mm to 6mm. There's no increased water resistance yet but the idea
link was to make the watch a bit more rugged and the crown a bit easier to manipulate those tiny 5.3mm crowns are fiddly to
link say the least. As far as dial
link variations go they're very similar to those of the 6204 except for this "clean dial" which is unique to this reference.