Seiko Cal. 5639 - 563

Seiko 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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seikata-wm-b0aebd826747