Seiko Cal. 4428 - 930

The 4428-930 is a sought-after Solar piece from Seiko's golden era. Powered by the 4428 caliber with 34j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-34d749d996f6]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1981

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