A real “superwatch,” it was driven from the manually wound Calibre 2896, which bundled a tourbillon, a power reserve indicator, and also a dynamographe, a tool that shows mainspring torque. Much more noteworthy even than these functions were being two huge shock absorbers — noticeable on the watch’s dial — https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/