Seiko Cal. 6691 - 372

The Seiko 6691-372 represents an important milestone in Seiko's 1990 lineup. It features a Black dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-66e97ad9fe5b]

Also known as: Sumo, Navigator

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1990

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