Seiko Cal. 4578 - 138

The Seiko 4578-138 represents an important milestone in Seiko's 1972 lineup. With its 22mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-a7b9890721a6]

Also known as: Bullhead, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1972

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