Seiko Cal. 6691 - 347

The Seiko 6691-347 represents an important milestone in Seiko's 1999 lineup. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-d78ba6b40b25]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

White

Jewels

29j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1999

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