Seiko Cal. 4439 - 740

This Automatic model from 1968 features a 38mm Hardlex-Coated Steel case. It features a White dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-208073a11d9e]

Also known as: Sumo, Sea Horse

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

14.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1968

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