Seiko Cal. 5690 - 636

This Quartz model from 1989 features a 41mm Stainless Steel case. With its 22mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-50292db76c41]

Also known as: Sumo, World Timer

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1989

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