Seiko Cal. 4578 - 242

This Hand-Winding model from 1972 features a 40mm Stainless Steel case. It features a Silver dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-73b40e311890]

Also known as: Sea Horse, Arnie

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1972

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