Seiko Cal. 6636 - 722

The Seiko 6636-722 represents an important milestone in Seiko's 1971 lineup. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-b70831025149]

Also known as: Arnie, Flighty

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1971

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