Seiko Cal. 5231 - 310

This Spring Drive model from 1991 features a 43mm Titanium case. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-eb47037d4143]

Also known as: Pogue, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1991

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