Seiko Cal. 3861 - 887

This Spring Drive model from 1969 features a 44mm Gold-Plated case. With its 19mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-6544f2118aea]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1969

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