Seiko Cal. 7138 - 142

This Hand-Winding model from 1970 features a 34mm Stainless Steel case. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-4c465b5771c7]

Also known as: Sumo, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

White

Jewels

18j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1970

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