Seiko Cal. 6643 - 474

Released in 1981, the Cal. 6643 with design code 474 was part of Seiko's domestic market collection. With its 19mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-0586a9cf11de]

Also known as: Monster, UFO

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Champagne

Jewels

32j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1981

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