Seiko Cal. 6643 - 960

The Seiko 6643-960 represents an important milestone in Seiko's 1983 lineup. With its 18mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-8780a942d0ad]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1983

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