※
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 if full winding condition.
Standard 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 Up
②
6 o'clock up
③
9 o'clock up
④
3 o'clock up
Duration time
In hand-winding, measure the operating time after winding the mainspring fully by hands
and leaving itself on natural condition with posture.
※8N33 needs 35～36 rotations and 6T33 needs about 19～20 rotations for full winding.
When tha mainspring is fully winded, the crown is not to be turned any more.
Please never wind the crown forcibly after full winded. It can be a cause of trouble.
More than 40 hours
17 Jewels
17 Jewels
6T33
-20
～
+40 seconds
／
day
More than 40 hours
Total height
Vibration frequency
Case fitting diameter
Under 50 seconds
-20
～
+40 seconds
／
day
Under 50 seconds
8N33
Jewels
Calibre
Cal. 8N33/6T33
HAND-WINDING & FULL-SKELETON MOVEMENT
Ligne
Overall diameter
Calibre
8N33
6T33
8-3/4
Φ
19.8mm
11-1/2
Φ
26mm
4.47mm
Φ
25.6mm
28800times/hour
Φ
19.4mm
21600times/hour
4.24mm
Accuracy
Posture difference
Duration time
①
②
④
③
1. Basic Specification
2. Time Performance
