Seiko Cal. 4423 - 738

The Seiko 4423-738 represents an important milestone in Seiko's 1973 lineup. Powered by the 4423 caliber with 25j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-8e4ffcc0ceeb]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

35mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1973

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