PARTS LIST / TECHNICAL GUIDE
Automatic Cal.4R71A
Automatic winding with manual winding mechanism
Additional function
・Second hand stop function
21,600 (6 beats per second)
Daily Rate Between +45 and -35 seconds per day
(worn on the wrist at temperature range between 5°C and 35°C)
Instantaneous rate at T0 Isochronous fault
Dial upward 6 o'clock at 9 o'clock at Dial upward
for measurement the top the top
（Daily rate in ± 20 s/d ± 30 s/d ± 30 s/d ±30 s/d
Regulation system ETACHRON system
Lift angle of the escapement 53°
Continuous operating time From fully wound to stoppage: Approximately 41 hours
Number of Jewels 24 Jewels
1/16
Time setting / Second hand stop function
Manual winding (clockwise only)
・3 Hands (Hour, Minute and Second hands) Movement Size
・Diameter Outside ：φ27.4 mm
Casing ：φ27.0 mm
