Seiko Cal. 4527 - 552

This Spring Drive model from 1977 features a 40mm PVD Black case. With its 18mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-bf1c1c472285]

Also known as: Tuna, Rally

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

White

Jewels

30j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1977

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