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Cal. 90S5
AUTOMATIC & MANUAL WINDING MOVEMENT
WITH FRONT VIEW SKELETON
Basic specification
Ligne
Overall diameter
Case fitting diameter
Total height
Vibration frequency
Jewels
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
Minute hand
Hour hand
Hands fitting force
Second hand
Minute hand
Hour hand
Lift angle
Casing
Time performance
Accuracy
Posture difference
Running time
※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 ①Date Dial side Up ②6 o'clock side up ③9 o'clock side up ④3 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).
11-1/2'''
Φ26.0mm
Φ25.6mm
3.90mm
28800 vibrations per hour
24 Jewels
Max. 0.60μN ・m
Max. 1.25μN ・m
Max. 1.50μN・m
Max. 30N
Max. 50N
Max. 50N
51°
Non-corresponding to "Divers' watches" defined by ISO6425
-10～30 seconds/day
Under 40 seconds/ day
More than 42 hours
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②
③
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