Seiko Cal. 4550 - 571

The Seiko 4550-571 represents an important milestone in Seiko's 1966 lineup. With its 22mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-7ee97c709390]

Also known as: Bullhead, UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

22j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1966

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