Functions

Hours and minutes, small seconds with stop-second function, date, day of week, month, moon phase, Grossmann manual winder with pusher

No. of parts

401 (movement 190/calendar gears 211)

No. of jewels

37 jewels, including 4 gold chatons, 3 of which are screwed

Escapement

Lever escapement

Oscillator

Shock-absorbed Grossmann balance with 4 inertia screws and 2 poising screws, suspended Nivarox 1 balance spring with No. 80 terminal curve, Gustav Gerstenberger geometry

Balance

14.2 mm, frequency: 18,000 semi-oscillations per hour

Power reserve

42 hours when fully wound

Operating elements

Crown in rose gold/platinum to wind the watch and set the time; pusher in rose gold/platinum to start the watch; correctors in rose gold/platinum to set the date, day of week, month and moon phase; sum corrector in rose gold/platinum to correct the date

Movement dimensions

Diameter: 36.4 mm, height: 8.3 mm