Seiko Cal. 4427 - 859

This Automatic model from 1979 features a 39mm Two-Tone case. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-fef23142083c]

Also known as: Helmet, World Timer

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1979

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