Seiko Cal. 4578 - 560

The Seiko 4578-560 represents an important milestone in Seiko's 1968 lineup. With its 21mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-936115c362cc]

Also known as: World Timer, Emperor

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1968

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