[SPECIFICATION]
φ
29.50 mm
26.00 mm
：
between
3 o'clock and 9 o'clock sides
4.57mm
3 hands (hour , minute , second )
Chronograph (minute , 1/1 second )
Calendar
Two pole stepping motor
Step motor 3 pieces
Electronic circuit reset switch
Second setting device
Date setting
≧
1600 A/m
Less than ±20seconds : Monthly rate at normal temperature range
SR920SW (SEIZAIKEN) Silver oxide battery
Battery life is approximately 2 years
Use 10-second gate
* Set the winding stem with crown at the normal position
Jewels 0
Jewel
Antimagnetic
Accuracy
Additional mechanism
Outside diameter
Casing diameter
Total height
Driving
System
Movement
size
Time
indication
1
Battery
Measuring gate by
quartz tester
SII Products
φ
28.80 mm
Version-03
PARTS CATALOGUE / TECHNICAL GUIDE
Cal.VD51B
Cal. No.
Item
Cal.VD51B
Movement
