Seiko Cal. 6638 - 523

This Hand-Winding model from 1970 features a 46mm Gold-Plated case. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-87a72e914e75]

Also known as: Monster, Arnie

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1970

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