Seiko Cal. 4428 - 564

The Seiko 4428-564 represents an important milestone in Seiko's 1980 lineup. It features a Cream dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-5f173e876bc4]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

26j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1980

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