Seiko Cal. 0770 - 227

This Spring Drive model from 1974 features a 40mm Gold-Plated case. With its 18mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-87c2baa0717a]

Also known as: Sumo, Pogue

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Burgundy

Jewels

27j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1974

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