Seiko Cal. 4478 - 731

The Seiko 4478-731 represents an important milestone in Seiko's 1982 lineup. It features a Green dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-f2504cde9f53]

Also known as: Rally, World Timer

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1982

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