Hamilton caliber 730 is U.S.A movement from 1940s.
Functions: sub second
Manual-winding movement with 17 jewels.
F = 18000 A/h
Power reserve: N/A
Diameter: 23.2 mm
More information:
“Incabloc” shock resistant.
Adjusted to temperature, isochronism and positions.
Dynavar lifetime unbreakable mainspring.
Important service note: In the Incabloc shock resistant device, the upper endstone is the thicker of the two.
Other links:
Hamilton caliber 730 watch parts
