Seiko Cal. 4578 - 604

This Spring Drive model from 1971 features a 39mm Stainless Steel case. With its 18mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-2cab8325ce89]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1971

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