Seiko Cal. 6690 - 577

The Seiko 6690-577 represents an important milestone in Seiko's 1977 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-8df8c08a4258]

Also known as: Rally

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Champagne

Jewels

30j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1977

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