Seiko Cal. 4580 - 940

The Seiko 4580-940 represents an important milestone in Seiko's 1966 lineup. With its 19mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-ce8e4ca9185b]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1966

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