Seiko Cal. 6643 - 693

The Seiko 6643-693 represents an important milestone in Seiko's 1969 lineup. The Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-73af647a05e2]

Also known as: UFO, Rally

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

41mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

33j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1969

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