Seiko Cal. 4421 - 998

This Automatic model from 1970 features a 44mm PVD Black case. Powered by the 4421 caliber with 20j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-45f0afc9769f]

Also known as: UFO, Arnie

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1970

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