Seiko Cal. 4577 - 327

Seiko 4577-327

The 4577-327 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4577 caliber with 20j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-20915d5184e5]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
13.0mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
White
Jewels
20j
Frequency
21,600 bph
Power Reserve
40 hours
Year
1971

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seikata-wm-20915d5184e5