Seiko Cal. 6620 - 428

The Seiko 6620-428 represents an important milestone in Seiko's 1990 lineup. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-b3af0ce1607e]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

36j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1990

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