Seiko Cal. 4578 - 755

The Seiko 4578-755 represents an important milestone in Seiko's 1966 lineup. With its 21mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-19b1067de7ca]

Also known as: Tuna, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1966

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