Seiko Cal. 4590 - 863

Seiko 4590-863

The 4590-863 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4590 caliber with 30j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-ee992e13e0bd]

Also known as: Sumo, Tuna

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
44mm
Case Thickness
10.3mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
60m
Dial Color
Blue Sunburst
Jewels
30j
Frequency
28,800 bph
Power Reserve
51 hours
Year
1977

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