Seiko Cal. 5634 - 923

This Spring Drive model from 1978 features a 43mm Hardlex-Coated Steel case. With its 20mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-f0c23d91ab07]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

26j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1978

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