Seiko Cal. 5231 - 636

This Quartz model from 1987 features a 38mm PVD Black case. The Coin-Edge bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-1d1e1c1b6d55]

Also known as: Sportsmatic

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1987

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