Seiko Cal. 6637 - 568

This Quartz model from 1973 features a 40mm Titanium case. With its 20mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-fe35ba1b6e3f]

Also known as: Shogun, Golden Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1973

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