The replica Audemars Piguet watch crystal itself is flat, but around the edges it is faceted before it goes into the case.It creates and additional point for light to refract off the watch and is a good character element for the brand.The rear of the watch has a K1 mineral crystal on the caseback window looking into the movement.Another interesting feature the seal of the Marvin company founders that is engraved on the bottom left hand side of the watch case.It reads "M & E D." This stands for Marc & Emmanuel Didisheim, who are the people responsible for Marvin's original beginning a quite long time ago (circa 1850).
I've never seen a watch company place just such an replica Oris watch engraving on the case, and I quite like it.You'll find this engraving on most all of their watches in the current brand lineup.A great way of summing of the design of the dial is being "functionally ." Everything you need to use the functions, with some design elements subtly built in.Nothing looks cluttered and I like the ring in the center of the dial that wraps around the power reserve indicator and date window.
Plus I like that the date window is circular and not replica Patek Philippe watch square.The hour indicators are applied and I like the thin hash marks around the periphery of the dial that add to the classic, instrumental feel of the timepiece.There is SuperLumiNova applied on most of the hour markers and the hands.You'll need a rich amount of sunlight to charge them.The M104 is not the best watch for night viewing, but at least it does have some lume.