AUTOMATIC & MANUAL WINDING MOVEMENT
WITH FRONT VIEW SKELETON
Basic specification
Function
Automatic & manual winding
Display by means of hands: hour, minute, second.
Front view skeleton
Stop second device
Shock-absorber device for balance staff
Technical characteristics
Balanceable weight of hands
Second hand
Max. 0.60
μ
N
・
m
Minute hand
Max. 1.25
μ
N
・
m
Hour hand
Max. 1.50
μ
N
・
m
Hands fitting force
Second hand
Max. 30N
Minute hand
Max. 50N
Hour hand
Max. 50N
Lift angle
51°
Casing
Non-corresponding to "Divers' watches" defined by ISO6425
Time performance
※
Accuracy of the mechanical watch is different from the daily rate of the quartz watch and the accuracy will change
maximum of several ten seconds during rewinding the spring, then the accuracy of the half winding condition will
be different from that of full winding condition.
<Time performance measurement condition>
Accuracy
Measure within lapse of 10
～
60 minutes from full winding.
Posture difference
Measure accuracy in 4 different postures shown on the
right picture within lapse of 10 ~ 60 minutes from full winding.
※
Direction of 4 postures
①
Date Dial side Up
②
6 o'clock side up
③
9 o'clock side up
④
3 o'clock side up
Running time
Measure the running time from full winding.
※
The mainspring becomes fully winded by rotating the ratchet wheel 7.5 times (turning the crown 40 times).
Cal. 90S5
Φ
26.0mm
Ligne
11-1/2'''
Overall diameter
Φ
25.6mm
3.90mm
28800 vibrations per hour
Case fitting diameter
Total height
Vibration frequency
24 Jewels
Jewels
Accuracy
Posture difference
Running time
-10
～
30 seconds/day
Under 40 seconds/ day
More than 42 hours
①
②
④
③
