A true “superwatch,” it absolutely was run from the manually wound Calibre 2896, which involved a tourbillon, a power reserve indicator, and a dynamographe, a device that shows mainspring torque. Far more noteworthy even than these options have been two massive shock absorbers — visible around the watch’s dial — https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/