Seiko Cal. 4577 - 636

Seiko 4577-636

The 4577-636 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4577 caliber with 20j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-46535c3bbd67]

Also known as: Sea Horse, Crown

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
46mm
Case Thickness
10.8mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
60m
Dial Color
Burgundy
Jewels
20j
Frequency
21,600 bph
Power Reserve
60 hours
Year
1979

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seikata-wm-46535c3bbd67