Seiko Cal. 6639 - 423

This Spring Drive model from 1974 features a 35mm Gold-Plated case. The Coin-Edge bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-57e66c51c968]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

White

Jewels

26j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1974

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