Seiko Cal. 5631 - 701

This Spring Drive model from 1980 features a 45mm Titanium case. With its 20mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-0ecc2314f13f]

Also known as: Panda, UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

8.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

White

Jewels

26j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1980

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