Seiko Cal. 4420 - 870

This Kinetic model from 1978 features a 44mm PVD Black case. Powered by the 4420 caliber with 23j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-f5987cbc7e6b]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1978

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