Seiko Cal. 6639 - 790

The Seiko 6639-790 represents an important milestone in Seiko's 1995 lineup. With its 20mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-70fabf819c24]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1995

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