Ø 36.60 mm; H 6.65 mm.
18 jewels, 3 of which are set in screwed gold chatons.
Glucydur balance with Nivarox spring, 21.600 A/h.
Hour, minute, and second with stop-second.
56-hr power reserve.
Engraved balance cock with patented woodpecker neck fine regulation.
Three-fifth plate with Glashütte long-slot click.