Seiko Cal. 5642 - 381

This Spring Drive model from 1991 features a 39mm Stainless Steel case. With its 22mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-8501f5dde6a0]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1991

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