The Moser Perpetual 1 is the only watch in the world to feature the patented “Flash Calendar” perpetual calendar. It does not display an incorrect date, and it can be adjusted both forwards and backwards via the similarly patented Double Pull Crown mechanism. This mechanism permits reliable setting of the position with the crown. Although the internal workings of the Moser Perpetual 1 are highly complicated, it looks very classic and elegant from the outside. The only tell-tale sign of the perpetual calendar on the dial is the large date and the highly unobtrusive hand to indicate the months via the twelve hour indices. The leap year cycle can be adjusted via a button recessed into the case at 9 o’clock. The associated display is positioned on the movement side of the watch and is visible through the sapphire glass back.
The first watch in the new generation is equipped with the Moser dual spring barrel and has a power reserve of at least seven days. The interchangeable escapement module for enhanced ease of servicing is used here for the first time by Moser. The execution of the escape wheel and pallet fork in hardened solid gold is also an exclusive and unique feature.