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seiko_5600

Seiko 5600

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
    • 56×1 - No complications
    • 56×5 - Date only
    • 56×6 - Day and date
    • 5619 - Dual time (Lord Matic and Duotime only)

See Also

SpeedMovementDateJewelsPower ReserveComplicationsNotes
216005601A1968-19782347 hoursLord Matic
5605A1968-19712547DateLord Matic
5606A1968-197823/2547 hoursDay, dateLord Matic
5619A1972-19742547Date, dual time 12hLord Matic, Duotime
288005621A, 5621B1969-19732547King Seiko
5625A, 5625B1968-19742547DateKing Seiko, Chronometer
5626A, 5626B1968-19732547Day, dateKing Seiko, Chronometer
5641A1971-19732547Grand Seiko
5645A1970-19742547DateGrand Seiko
5646A1970-19752547Day, dateGrand Seiko

Applications

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

Description:

Functions:

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:

seiko_5600.txt · Last modified: 11.10.2021 21:09 (external edit)

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