Seiko Cal. 6690 - 813

The Seiko 6690-813 represents an important milestone in Seiko's 1980 lineup. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-f6646ad5f136]

Also known as: Samurai, UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Champagne

Jewels

36j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1980

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