7 3/4 ”’
Diameter 17,20 mm
Height 5,35 mm
Hours, minutes, central second
Date and day display in window, date semi-instantaneous,
day instantaneous
Quick correction of date and day
Time setting with stop-second
Self-winding mechanism, bidirectional
Frequency: 28’800 vibrations per hour; 4 Hz
25 jewels
Regulator system ETACHRON
Typical power reserve: 44 hours
