Seiko Cal. 4578 - 109

The Seiko 4578-109 represents an important milestone in Seiko's 1980 lineup. With its 18mm lug width and 14.1mm profile, it sits comfortably on most wrists. [seikata-wm-05e90d77747f]

Also known as: Crown, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Burgundy

Jewels

17j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1980

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