Seiko Cal. 6639 - 102

The Seiko 6639-102 represents an important milestone in Seiko's 1991 lineup. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-bdf6ca1e0b02]

Also known as: Goldfeather, Navigator

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Cream

Jewels

17j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1991

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