Seiko Cal. 6641 - 898

The Seiko 6641-898 represents an important milestone in Seiko's 1979 lineup. Powered by the 6641 caliber with 26j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-f952b5ac2299]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1979

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