Seiko Cal. 4423 - 737

This Quartz model from 1971 features a 38mm PVD Black case. Powered by the 4423 caliber with 33j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-444b16c54f10]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

14.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1971

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