Seiko Cal. 5683 - 917

This Spring Drive model from 1979 features a 40mm Titanium case. With its 18mm lug width and 14.1mm profile, it sits comfortably on most wrists. [seikata-wm-e6a055157120]

Also known as: Sumo, Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1979

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