Seiko Cal. 6687 - 991

This Quartz model from 1983 features a 36mm PVD Black case. With its 19mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-3832a23f2435]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1983

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