Mechanical movement with self-winding, ball-bearing rotor, bi-directional winding, power reserve 38-40 hours, hacking seconds device, date and weekday indication.
Calibre 2834 from 1974, 2834-1 from 1979, 2834-2 from 1982.
13 ”’
Diameter 29,00 mm
Height 5,05 mm
Hours, minutes, central second
Date and external day indicator in window,
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: 42 hours
