Seiko Cal. 0731 - 778

This Quartz model from 1966 features a 37mm Stainless Steel case. With its 20mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-33d60f4fea51]

Also known as: Sumo, Goldfeather

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1966

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