Seiko Cal. 6643 - 828

The Seiko 6643-828 represents an important milestone in Seiko's 1985 lineup. With its 19mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-e80f34bdcbc7]

Also known as: Emperor

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Cream

Jewels

30j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1985

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