Seiko Cal. 6635 - 989

Seiko 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

Related Models

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