Seiko Cal. 4577 - 501

This Spring Drive model from 1969 features a 45mm Stainless Steel case. With its 21mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-cd54a7311b78]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1969

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