Seiko Cal. 5687 - 666

The Seiko 5687-666 represents an important milestone in Seiko's 1973 lineup. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-1fa44fed5fed]

Also known as: Sumo, Bullhead

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1973

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