Seiko Cal. 4420 - 790

The Seiko 4420-790 represents an important milestone in Seiko's 1983 lineup. With its 20mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-53ac281865b2]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1983

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