Seiko Cal. 4578 - 146

The Seiko 4578-146 represents an important milestone in Seiko's 1970 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-86da34bca840]

Also known as: World Timer, Crown

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1970

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