Seiko Cal. 6639 - 278

The Seiko 6639-278 represents an important milestone in Seiko's 1966 lineup. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-1731c2e831dd]

Also known as: Silverwave

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1966

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