Seiko Cal. 5639 - 144

This Quartz model from 1976 features a 40mm Stainless Steel case. With its 22mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-847a27a9da3b]

Also known as: Monster, Panda

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Black

Jewels

26j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1976

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