Seiko Cal. 4521 - 556

This Spring Drive model from 1987 features a 37mm Gold-Plated case. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-c77e5601c132]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1987

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