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[SPECIFICATION]
Item
Movement
Outside diameter
Movement
Casing diameter
size
Total height
Time
indication
Driving System
Additional mechanism
Antimagnetic
Accuracy
Battery
Measuring gate by
quartz tester
Jewels
PARTS CATALOGUE / TECHNICAL GUIDE
Cal.VD57C
Cal. No.
（
Ｄ）
φ
φ29.50 mm
（
Ｄ）
φ
φ28.80 mm
4.57 mm
3 Hands ( Hour , Minute , Second )
Chronograph ( Minute , Second , 1/10 second )
Calendar
Two pole stepping motor
Step motor 3 pieces
Electronic circuit reset switch
Second setting device
[ Time ]
Indicated by the Hour , Minute , Second and Calendar
[ Stop watch ]
Up to 1 minute in 1/10 second ( 2 seconds per round )
Up to 60 minutes in 1 second split time
≧ 1600 A/m
Less than ± 20seconds : Monthly rate at normal temperature range
SR920SW ( SEIZAIKEN ) Silver oxide battery
φ 9.5 × t 2.0 mm
Battery life is approximately 3 years
Use 10-second gate
*Set the winding stem with crown at the normal position
0 Jewel
SII Products
VD57C
（
( 3H - 9H )
12H
×
26.00 mm
×
（
( 3H - 9H )
12H
×
―
×
－
）
6H
―
－
）
6H
―
Version-01
1
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