Seiko Cal. 4421 - 528

The Seiko 4421-528 represents an important milestone in Seiko's 1990 lineup. Powered by the 4421 caliber with 26j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-f05a3fffeecf]

Also known as: Rally, Emperor

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

26j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1990

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