Seiko Cal. 5638 - 975

The Seiko 5638-975 represents an important milestone in Seiko's 1977 lineup. With its 19mm lug width and 9.6mm profile, it sits comfortably on most wrists. [seikata-wm-1bacc89c191f]

Also known as: Goldfeather, Flighty

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1977

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