Seiko Cal. 4420 - 100

This Quartz model from 1983 features a 40mm PVD Black case. Powered by the 4420 caliber with 24j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-210eae975f06]

Also known as: Helmet, Sea Horse

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Silver

Jewels

24j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1983

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