Seiko Cal. 6643 - 497

The 6643-497 is a sought-after Hand-Winding piece from Seiko's golden era. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-e6c2ec1b2b91]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1983

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