Seiko Cal. 7180 - 556

This Spring Drive model from 1979 features a 42mm Hardlex-Coated Steel case. With its 20mm lug width and 11.7mm profile, it sits comfortably on most wrists. [seikata-wm-2d448b800610]

Also known as: Crown, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1979

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