Seiko Cal. 4428 - 110

The Seiko 4428-110 represents an important milestone in Seiko's 1989 lineup. With its 21mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-bf4e9697798a]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1989

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