Seiko Cal. 3831 - 203

This Quartz model from 1991 features a 40mm Two-Tone case. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-ee8da118700e]

Also known as: Tuna, Arnie

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

30j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1991

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