Seiko 5600

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Suwa Seikosha produced the 5600 series of high-end automatic watch movements for Seiko in the 1960's and 1970's.

This line was used in various Lord Matic, King Seiko, and Grand Seiko models from 1968 through 1976. It appeared first in the 1968 Lord Marvel, next in 1969 in the King Seiko 56KS, and finally in 1970 in the Grand Seiko 56GS. It was also used in two other Seiko models - the Seiko Duotime and Seiko Chronometer.

Unlike previous Grand Seiko movements, production of Calibre 5600 was highly automated. This made the movements cheaper and helps to this day since parts are more plentiful. But the speed of the movement was reduced from "Hi-Beat" 36,000 A/h of its predecessors.

The 5600 family was introduced in 1968 for the Lord Matic and first appeared in King Seiko guise the following year. This was the first Suwa movement used in the Daini King Seiko line.

Variants

The 5600 family was produced in four grades and with three complication sets:

  • Grades:
    • Lord Matic - 560x - 20-25 jewels, unregulated, 21,600 A/h
    • King Seiko - 562xA - 25 jewels, unregulated, 28,800 A/h
    • King Seiko Regulated - 562xB - 25 jewels, regulated, 28,800 A/h
    • Grand Seiko - 564x - 25 jewels, regulated, 28,800 A/h
  • Complications:
    • 56x1 - No complications
    • 56x5 - Date only
    • 56x6 - Day and date
    • 5619 - Dual time (Lord Matic and Duotime only)

See Also

Speed Movement Date Jewels Power Reserve Complications Notes
21600 5601A 1968-1978 23 47 hours Lord Matic
5605A 1968-1971 25 47 Date Lord Matic
5606A 1968-1978 23/25 47 hours Day, date Lord Matic
5619A 1972-1974 25 47 Date, dual time 12h Lord Matic, Duotime
28800 5621A, 5621B 1969-1973 25 47 King Seiko
5625A, 5625B 1968-1974 25 47 Date King Seiko, Chronometer
5626A, 5626B 1968-1973 25 47 Day, date King Seiko, Chronometer
5641A 1971-1973 25 47 Grand Seiko
5645A 1970-1974 25 47 Date Grand Seiko
5646A 1970-1975 25 47 Day, date Grand Seiko

Applications

  • Lord Matic
    • 1968-1978 - 5601A
    • 1968-1971 - 5605A
    • 1968-1978 - 5606A
    • 5262 (Lord Matic De Luxe)
  • King Seiko 56KS
    • 1969-1973 - 5621A/5621B
    • 1968-1974 - 5625A/5625B
    • 1968-1973 - 5626A/5626B
  • Seiko Chronometer
    • 1969-1973 - 5625B
    • 1969-1974 - 5626B
  • Grand Seiko 56GS
    • 1971-1972 - 5641A
    • 1970-1973 - 5645A
    • 1970-1974 - 5646A
  • Seiko Duotime
    • 1972-1974 - 5619A

External links

Description:

Automatic movement

Functions:

Hours, minutes, central seconds
Automatic winding
Quickset date
Quickset day
Dual time

Data:

Diameter: 11.5 ligne (25.6 mm), H: 4.35 mm
20, 23, 24, or 25 jewels
21,600 or 28,800 A/h

Production period:

1968-1976