Seiko Cal. 4420 - 143

This Spring Drive model from 1969 features a 46mm Hardlex-Coated Steel case. It features a Green dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-46da03c55fb1]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1969

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