Seiko Cal. 4578 - 571

The Seiko 4578-571 represents an important milestone in Seiko's 1966 lineup. With its 22mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-62c79cd4b7bc]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

20j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1966

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