Seiko Cal. 6643 - 624

The Seiko 6643-624 represents an important milestone in Seiko's 1972 lineup. With its 22mm lug width and 11.7mm profile, it sits comfortably on most wrists. [seikata-wm-b98d3f0aa9fb]

Also known as: Bellmatic, Flighty

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1972

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