Seiko Cal. 6635 - 989

The Seiko 6635-989 represents an important milestone in Seiko's 1978 lineup. Powered by the 6635 caliber with 24j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-b15232ae08ba]

Also known as: UFO, Bellmatic

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

24j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1978

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