Seiko Cal. 5631 - 369

This Solar model from 1972 features a 40mm Gold-Plated case. Powered by the 5631 caliber with 30j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-1acd279f53e7]

Also known as: Helmet, Sea Horse

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1972

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