Seiko Cal. 6633 - 612

The Seiko 6633-612 represents an important milestone in Seiko's 1966 lineup. The Fixed bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-d2afc0090da7]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1966

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