Seiko Cal. 6643 - 582

The Seiko 6643-582 represents an important milestone in Seiko's 1991 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-9c27eaf0003a]

Also known as: UFO, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

27j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1991

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