Seiko Cal. 5638 - 674

This Spring Drive model from 1969 features a 44mm PVD Black case. With its 20mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-69fd28292fae]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1969

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