Seiko Cal. 6691 - 104

The Seiko 6691-104 represents an important milestone in Seiko's 1987 lineup. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-240a18f684f4]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

30j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1987

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