Seiko 5M43A Technical Manual

Parts Catalogue / TECHNICAL GUIDE

[SPECIFICATIONS]

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