Seiko Cal. 6635 - 421

The Seiko 6635-421 represents an important milestone in Seiko's 1972 lineup. The Fixed bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-0e3a692fdb93]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1972

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