Seiko Cal. 6647 - 633

The Seiko 6647-633 represents an important milestone in Seiko's 1966 lineup. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-6567ceac0017]

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1966

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