Seiko Cal. 4428 - 577

The Seiko 4428-577 represents an important milestone in Seiko's 1982 lineup. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-39fd903f53b8]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1982

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