Seiko Cal. 6634 - 440

The Seiko 6634-440 represents an important milestone in Seiko's 1994 lineup. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-0afcc20b3ef4]

Also known as: Sumo, UFO

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1994

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