Seiko Cal. 6639 - 478

The Seiko 6639-478 represents an important milestone in Seiko's 1977 lineup. It features a White dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-675195ee9cd1]

Also known as: Samurai, Sea Horse

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1977

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