Seiko Cal. 4580 - 740

This Spring Drive model from 1974 features a 46mm Hardlex-Coated Steel case. With its 18mm lug width and 14.5mm profile, it sits comfortably on most wrists. [seikata-wm-7aad2d6aa5cd]

Also known as: Tuna, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Champagne

Jewels

27j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1974

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