Seiko Cal. 6139 - 255

This Spring Drive model from 1968 features a 34mm Stainless Steel case. It features a Champagne dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-eba45dce7086]

Also known as: Monster, Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1968

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