Seiko Cal. 3831 - 487

This Spring Drive model from 1983 features a 36mm Gold-Plated case. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-8b326be6f69c]

Also known as: Sumo, Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1983

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