Seiko Cal. 5638 - 264

The Seiko 5638-264 represents an important milestone in Seiko's 1987 lineup. With its 19mm lug width and 8.4mm profile, it sits comfortably on most wrists. [seikata-wm-c9d2391164e1]

Also known as: Turtle, Monster

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

8.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1987

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