ETA 2671
7 3/4 '''
Diameter 17,20 mm
Height 4,80 mm
Hours, minutes, central second
Date display in window, semi-instantaneous
Quick correction of date
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