Seiko Cal. 5231 - 900

Released in 1973, the Cal. 5231 with design code 900 was part of Seiko's domestic market collection. Powered by the 5231 caliber with 22j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-ff18603dc97a]

Also known as: Shogun, Rally

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1973

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