Seiko Cal. 5639 - 147

The Seiko 5639-147 represents an important milestone in Seiko's 1991 lineup. Powered by the 5639 caliber with 17j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-6d4369926d27]

Also known as: Bullhead, Navigator

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1991

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