Seiko Cal. 6634 - 663

The Seiko 6634-663 represents an important milestone in Seiko's 1966 lineup. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-b2c3d92f2f60]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1966

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