Seiko Cal. 4427 - 403

This Automatic model from 1980 features a 39mm PVD Black case. It features a Black dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-99d222746ffd]

Also known as: Navigator

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1980

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