Seiko Cal. 6631 - 579

This Solar model from 1979 features a 37mm Two-Tone case. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-514bbaf62cf6]

Also known as: Navigator

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1979

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