Seiko Cal. 4420 - 812

The Seiko 4420-812 represents an important milestone in Seiko's 1985 lineup. With its 20mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-40db1ab8767c]

Also known as: Sportsmatic

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

130m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1985

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