Seiko Cal. 6643 - 763

The 6643-763 is a sought-after Quartz piece from Seiko's golden era. With its 19mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-4da535e7491f]

Also known as: Crown, Emperor

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

13.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1980

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