Seiko Cal. 5231 - 981

The Seiko 5231-981 represents an important milestone in Seiko's 1968 lineup. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-ee85317ad7e5]

Also known as: Pogue, Rally

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1968

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