Seiko Cal. 6638 - 815

This Spring Drive model from 1965 features a 36mm Gold-Plated case. With its 18mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-d287929f5cf0]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1965

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