Seiko Cal. 6690 - 433

This Hand-Winding model from 1975 features a 39mm Stainless Steel case. With its 19mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-c4cf6c22e70f]

Also known as: Sumo, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1975

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