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PARTS LIST / TECHNICAL GUIDE
[SPECIFICATION]
Item
・3 Hands (Hour, minute and second hand)
・Calendar (Date: Date disk)
Driving system
Additional function
Normal position
Crown
1st click position
position
2nd click position
Vibrations per hour
Daily rate
Loss/
Gain
Standard rate for
measurement
Regulation system
Lift angle of the escapement
Power reserve
Number of Jewels
Cal.6R15C / 6R15D
Cal. No.
Automatic winding with manual winding mechanism
 ・Instant date setting device
 ・Second hand stop function
 Manual winding (clockwise only)
 Date setting (counter clockwise only )
 Time setting /Second hand stop function
21,600 (6 beats per second)
 Between +25/-15 seconds per day
 (worn on the wrist at temperature-range between 5℃ and 35℃)
Testing positions
Measurement (daily
rate in seconds:s/d)
 ETACHRON system
 53°
 From fully wound to stoppage: Approximately 50 hours
 23 Jewels
6R15C / 6R15D
Movement size
・Diameter
Outside : φ27.4 mm
Casing : φ27.0 mm
・Height
      : 5.25 mm
Instantaneous rate at T0
(Fully wound condition)
6 o'clock at
Dial upward
the top
±10 s/d
±15 s/d
1/18
Isochronous fault
9 o'clock at
Dial upward
the top
±10 s/d
±15 s/d

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This manual is also suitable for:

6r15d