Seiko Cal. 6643 - 861

Released in 1984, the Cal. 6643 with design code 861 was part of Seiko's domestic market collection. The Coin-Edge bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-3d86578ed4cc]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

34mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Champagne

Jewels

35j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1984

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