Seiko Cal. 3831 - 687

This Automatic model from 1971 features a 45mm Gold-Plated case. With its 20mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-14ea1b289503]

Also known as: Shogun, Bellmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1971

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