Seiko Cal. 6690 - 668

The Seiko 6690-668 represents an important milestone in Seiko's 1973 lineup. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-e1039c7aae9a]

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1973

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