Seiko Cal. 5231 - 528

This Spring Drive model from 1975 features a 36mm Gold-Plated case. It features a Silver dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-d378cb22bcbf]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Silver

Jewels

29j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1975

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