Seiko Cal. 6636 - 681

The Seiko 6636-681 represents an important milestone in Seiko's 1982 lineup. With its 19mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-13a85585bbc8]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1982

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