Seiko Cal. 7187 - 940

This Solar model from 1967 features a 37mm Gold-Plated case. With its 21mm lug width and 12.8mm profile, it sits comfortably on most wrists. [seikata-wm-3be516ff23d1]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

White

Jewels

27j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1967

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