Seiko Cal. 4428 - 346

The Seiko 4428-346 represents an important milestone in Seiko's 1984 lineup. Powered by the 4428 caliber with 29j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-36708365f718]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

29j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1984

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