Seiko Cal. 6690 - 233

The Seiko 6690-233 represents an important milestone in Seiko's 1978 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-d3dc9bb881aa]

Also known as: Samurai, Navigator

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1978

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