Seiko Cal. 6643 - 143

The Seiko 6643-143 represents an important milestone in Seiko's 1977 lineup. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-2fc2fecc54ee]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

26j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1977

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