Seiko Cal. 6638 - 906

This Hand-Winding model from 1985 features a 37mm PVD Black case. With its 20mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-cee2abe2c030]

Also known as: Pogue

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1985

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