Seiko Cal. 5639 - 478

The Seiko 5639-478 represents an important milestone in Seiko's 1966 lineup. Powered by the 5639 caliber with 32j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-ad07d55267ba]

Also known as: Shogun, UFO

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Champagne

Jewels

32j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1966

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