Seiko Cal. 5638 - 831

This Solar model from 1967 features a 43mm Stainless Steel case. It features a Cream dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-e9b7f5e9ed91]

Also known as: Monster, Helmet

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1967

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