Seiko Cal. 6643 - 790

The Seiko 6643-790 represents an important milestone in Seiko's 1983 lineup. With its 22mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-5e0fbdff7309]

Also known as: Samurai, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1983

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