Seiko Cal. 7055 - 557

The Seiko 7055-557 represents an important milestone in Seiko's 1990 lineup. With its 20mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-aeba33eb8111]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1990

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