Seiko Cal. 4428 - 121

The Seiko 4428-121 represents an important milestone in Seiko's 1983 lineup. With its 18mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-9ab5af97b574]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

23j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1983

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