Seiko Cal. 6690 - 904

The Seiko 6690-904 represents an important milestone in Seiko's 1965 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-cc9010c8ba80]

Also known as: Shogun

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1965

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