Seiko Cal. 5231 - 158

The Seiko 5231-158 represents an important milestone in Seiko's 1967 lineup. It features a Silver dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-d01a58fd4da4]

Also known as: Tuna, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1967

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