Seiko Cal. 6640 - 568

The Seiko 6640-568 represents an important milestone in Seiko's 1991 lineup. The Fixed bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-74996c306955]

Also known as: Goldfeather

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Champagne

Jewels

18j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1991

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