Seiko Cal. 6643 - 874

The 6643-874 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-ff90fa62781a]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1968

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