Seiko Cal. 6643 - 607

The 6643-607 is a sought-after Hand-Winding piece from Seiko's golden era. With its 19mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-95a45794dcb7]

Also known as: UFO, Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1977

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