Seiko Cal. 5221 - 737

This Spring Drive model from 1997 features a 39mm Gold-Plated case. With its 19mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-b0786d621b7e]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1997

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