Seiko Cal. 4578 - 996

Seiko 4578-996

The 4578-996 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4578 caliber with 20j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-f3d250ea76ce]

Also known as: Sumo, Helmet

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
10.8mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
130m
Dial Color
Navy
Jewels
20j
Frequency
21,600 bph
Power Reserve
59 hours
Year
1991

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