Seiko Cal. 6643 - 766

The 6643-766 is a sought-after Automatic piece from Seiko's golden era. With its 21mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-be0f86fa40d0]

Also known as: Emperor, Flighty

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1972

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