Seiko Cal. 6631 - 980

The Seiko 6631-980 represents an important milestone in Seiko's 1985 lineup. With its 20mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-1ac1247e1c2d]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1985

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