Seiko Cal. 6634 - 963

Released in 1968, the Cal. 6634 with design code 963 was part of Seiko's domestic market collection. The Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-ce74f3aa0eec]

Also known as: Monster, UFO

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

13.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

19j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1968

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