Seiko Cal. 4428 - 333

This Spring Drive model from 1985 features a 40mm Gold-Plated case. With its 18mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-267b2b9f473e]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

21j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1985

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