Seiko Cal. 5639 - 563

The Seiko 5639-563 represents an important milestone in Seiko's 1981 lineup. Powered by the 5639 caliber with 19j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-b0aebd826747]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1981

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