Seiko Cal. 4429 - 238

The Seiko 4429-238 represents an important milestone in Seiko's 1975 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-59ef4bb47c4c]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Cream

Jewels

29j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1975

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