Seiko Cal. 5638 - 180

The Seiko 5638-180 represents an important milestone in Seiko's 1971 lineup. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-d370d7e8591a]

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1971

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