Seiko Cal. 6690 - 325

The Seiko 6690-325 represents an important milestone in Seiko's 1974 lineup. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-6c0dcff8546c]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1974

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