Seiko Cal. 6643 - 255

The Seiko 6643-255 represents an important milestone in Seiko's 1983 lineup. With its 19mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-18f9abc6407d]

Also known as: World Timer, Emperor

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1983

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