Seiko Cal. 6639 - 732

The Seiko 6639-732 represents an important milestone in Seiko's 1979 lineup. Powered by the 6639 caliber with 20j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-13b28f7b9ec1]

Also known as: Flighty

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1979

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