Seiko Cal. 6638 - 403

This Hand-Winding model from 1972 features a 42mm PVD Black case. With its 21mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-009eaa04b4c9]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1972

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