Seiko 5M42A, Техническое руководство, Страница: 1 / 12

1
Movement size
The illustrations refer to Cal. 5M42A.
(x 1.0)
Movement
Item
[SPECIFICATIONS]
Cal. 5M42A
Cal. 5M43A
PARTS CATALOGUE
/
TECHNICAL GUIDE
4.3 mm Height
Casing diameter ø27.0 mm
Capacitor voltage: 0.5 ~ 2.3V
From 1.55V to stoppage: Approx. 168 hours
Cal. No.
5M42A 5M43A
Outside diameter ø27.6 mm
3 hands Time indication
Step motor (Load compensated driving pulse type)
Driving system
Monthly rate at normal temperature range: less than 15 seconds Loss/gain
Nil Regulation system
Use 10-second gate.
Measuring gate by quartz tester
Automatic generating system Power generator
Polyacene lithium condenser Capacitor
Power supply
Operating voltage range
Duration of charge
6 jewels Jewels
• Automatic generating system
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Power reserve indicator
• Overcharge prevention function
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Electronic circuit reset switch
• Train wheel setting device
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Date calendar
• Day calendar (for Cal. 5M43A only)
• Instant setting device for date calendar
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Instant setting device for day calendar (for Cal. 5M43A only)
Additional mechanism