Seiko Cal. 7178 - 557

This Automatic model from 1976 features a 45mm PVD Black case. With its 21mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-38428da2a30e]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Burgundy

Jewels

28j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1976

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