Seiko Cal. 6643 - 977

The Seiko 6643-977 represents an important milestone in Seiko's 1989 lineup. With its 21mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-8b9c99aaa307]

Also known as: Sea Horse, Arnie

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

18j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1989

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