Seiko Cal. 4427 - 673

This Automatic model from 1979 features a 36mm Hardlex-Coated Steel case. With its 19mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-ebd031cac11e]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1979

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