Seiko Cal. 4559 - 428

The Seiko 4559-428 represents an important milestone in Seiko's 1985 lineup. Powered by the 4559 caliber with 28j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-05046a69c210]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

14.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

28j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1985

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