Seiko Cal. 4423 - 906

This Spring Drive model from 1968 features a 44mm Hardlex-Coated Steel case. With its 18mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-08e7a97b607d]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Champagne

Jewels

36j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1968

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