Seiko Cal. 6690 - 774

The Seiko 6690-774 represents an important milestone in Seiko's 1990 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-498cee5f2793]

Also known as: Rally, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1990

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