Seiko Cal. 6643 - 279

The Seiko 6643-279 represents an important milestone in Seiko's 1985 lineup. Powered by the 6643 caliber with 23j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-2697ca815bf5]

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

43mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1985

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