Seiko Cal. 6643 - 764

Released in 1970, the Cal. 6643 with design code 764 was part of Seiko's domestic market collection. It features a Cream dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-db04877ace3b]

Also known as: Flighty

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

18j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1970

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