Seiko Cal. 5639 - 590

Seiko 5639-590

The 5639-590 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5639 caliber with 21j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-43dfe7a7203e]

Also known as: Monster, Helmet

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
43mm
Case Thickness
13.2mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
200m
Dial Color
Black
Jewels
21j
Frequency
36,000 bph
Power Reserve
52 hours
Year
1975

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