Seiko Cal. 4427 - 528

The 4427-528 is a sought-after Solar piece from Seiko's golden era. Powered by the 4427 caliber with 21j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-145c0e22a9fd]

Also known as: Turtle

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1967

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