Seiko Cal. 4423 - 936

The Seiko 4423-936 represents an important milestone in Seiko's 1969 lineup. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-c5de1bd229d2]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1969

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