Seiko Cal. 4420 - 237

The Seiko 4420-237 represents an important milestone in Seiko's 1975 lineup. It features a Cream dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-a4add586d78a]

Also known as: Monster

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

14.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Cream

Jewels

30j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1975

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