Seiko Cal. 6646 - 563

The 6646-563 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-23aa4666ca30]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

30m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1982

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