Seiko Cal. 5638 - 155

This Spring Drive model from 1967 features a 45mm Stainless Steel case. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-01ce2fee2e9c]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Burgundy

Jewels

32j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1967

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