Seiko Cal. 6643 - 221

Released in 1985, the Cal. 6643 with design code 221 was part of Seiko's domestic market collection. With its 19mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-cc4da3c8986d]

Also known as: Helmet, Rally

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Black

Jewels

35j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1985

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