Seiko Cal. 3831 - 363

This Spring Drive model from 1987 features a 40mm PVD Black case. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-cae58a304400]

Also known as: Shogun, Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Champagne

Jewels

24j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1987

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