Seiko Cal. 6638 - 479

The Seiko 6638-479 represents an important milestone in Seiko's 1992 lineup. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-2dd2bf18593e]

Also known as: Bullhead, Navigator

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1992

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