Seiko Cal. 6690 - 638

The Seiko 6690-638 represents an important milestone in Seiko's 1993 lineup. With its 21mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-769523bf6118]

Also known as: Rally, Flighty

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1993

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