Seiko Cal. 6621 - 533

This Spring Drive model from 1987 features a 40mm Stainless Steel case. With its 21mm lug width and 14.2mm profile, it sits comfortably on most wrists. [seikata-wm-5a7e54bef928]

Also known as: UFO, Flighty

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1987

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