Seiko Cal. 5660 - 617

This Automatic model from 1977 features a 40mm PVD Black case. With its 18mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-a69f8b4d8339]

Also known as: Sea Horse, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1977

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