Seiko Cal. 4428 - 707

The Seiko 4428-707 represents an important milestone in Seiko's 1975 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-c2cc33369a29]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

35j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1975

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