Seiko Cal. 6631 - 569

This Spring Drive model from 1980 features a 36mm Stainless Steel case. With its 20mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-3e155cf24b54]

Also known as: Samurai, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Burgundy

Jewels

36j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1980

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