Seiko Cal. 4427 - 487

The Seiko 4427-487 represents an important milestone in Seiko's 1990 lineup. With its 20mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-520bb2f0de19]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

25j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1990

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