Oris Big Crown ProPilot X Calibre 115: Going Full Monty

The mechanical diva on the stage of the Oris Big Crown ProPilot X Calibre 115 movement is the big kahuna itself: the extremely large mainspring visible at 12 o'clock, which provides more than 10 days of power reserve A common strategy for achieving extremely long power reserves - a really user-friendly feature for people who own several watches - is to have two spring barrels Oris opted for one big one instead.

And with the development of Caliber 110 first presented in 2014 in honor of the company's 110-year anniversary, the Hölstein-based brand is now going "Full Monty." "The official power reserve is still 10 days, but until the watch stops it is somewhere between 11 and 11.5 days," Fischli says The supporting role to the mainspring is played by the patented, non-linear power reserve indication at 3 o clock Last but not least, the contemporary feeling of the Big Crown ProPilot X Calibre 115 also gets a boost from the materials: the case and well-integrated bracelet with double deployant clasp are made of titanium.

Movement: manually wound Caliber 115, 10-day power reserve, 3 Hz/21,600 vph frequency, patented non-linear power reserve display. . Source