Seiko Cal. 6139 - 831

This Solar model from 1968 features a 35mm Two-Tone case. The Fixed bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-4ceb8ad847e5]

Also known as: Monster

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1968

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