Seiko Cal. 5627 - 428

This Spring Drive model from 1991 features a 40mm Gold-Plated case. With its 20mm lug width and 12.1mm profile, it sits comfortably on most wrists. [seikata-wm-1b1928fdd758]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1991

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