Seiko Cal. 6691 - 921

The Seiko 6691-921 represents an important milestone in Seiko's 1989 lineup. With its 19mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-db1bc6531bad]

Also known as: Tuna, UFO

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

17j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1989

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