Seiko Cal. 6643 - 334

The Seiko 6643-334 represents an important milestone in Seiko's 1978 lineup. With its 19mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-8f3d0664652d]

Also known as: UFO, Arnie

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1978

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