Seiko Cal. 4427 - 183

This Quartz model from 1977 features a 39mm PVD Black case. Powered by the 4427 caliber with 22j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-fb3ef5be9f68]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

39mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1977

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