Seiko Cal. 5635 - 666

The Seiko 5635-666 represents an important milestone in Seiko's 1980 lineup. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-46ec97c1979c]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1980

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