Seiko Cal. 7055 - 187

The Seiko 7055-187 represents an important milestone in Seiko's 1976 lineup. With its 18mm lug width and 12.4mm profile, it sits comfortably on most wrists. [seikata-wm-4b5448095e2c]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1976

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