Seiko Cal. 4422 - 448

This Quartz model from 1970 features a 43mm PVD Black case. Powered by the 4422 caliber with 21j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-95b48244a4ed]

Also known as: Sumo, Arnie

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1970

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