Seiko Cal. 4428 - 506

The Seiko 4428-506 represents an important milestone in Seiko's 1970 lineup. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-c2bb3ac59477]

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1970

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