Seiko Cal. 4428 - 920

This Kinetic model from 1980 features a 39mm Titanium case. With its 22mm lug width and 8.4mm profile, it sits comfortably on most wrists. [seikata-wm-dfad8055efab]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

39mm

Case Thickness

8.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1980

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