Seiko Cal. 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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