Seiko Cal. 6691 - 938

The Seiko 6691-938 represents an important milestone in Seiko's 1967 lineup. The Fixed bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-ff057daf52a0]

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1967

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