Seiko Cal. 6643 - 300

Released in 1989, the Cal. 6643 with design code 300 was part of Seiko's domestic market collection. Powered by the 6643 caliber with 22j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-75471032ff03]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1989

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