Seiko Cal. 6638 - 666

The Seiko 6638-666 represents an important milestone in Seiko's 1992 lineup. With its 21mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-f213650a6b35]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1992

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