Seiko Cal. 6620 - 590

The Seiko 6620-590 represents an important milestone in Seiko's 1967 lineup. With its 18mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-4632fcf50ee7]

Also known as: Golden Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1967

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