Seiko Cal. 6620 - 371

The Seiko 6620-371 represents an important milestone in Seiko's 1967 lineup. With its 20mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-c34986281ce6]

Also known as: Sumo, Flighty

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1967

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