Seiko Cal. 4427 - 524

Seiko 4427-524

The 4427-524 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4427 caliber with 25j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-bf63b6c50930]

Also known as: Turtle, Helmet

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
34mm
Case Thickness
12.3mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
180m
Dial Color
Green
Jewels
25j
Frequency
28,800 bph
Power Reserve
45 hours
Year
1970

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seikata-wm-bf63b6c50930