I had no idea Cartier can be considered to be a top tier manufacturer. Don't they just rebody other people's movements in fancy cases?
Well, a lot of people think the same way you do.
BUT
Some time ago Cartier entered the stage of a manufacturer, the search function could be of some help to you ;-)
Mid 2008 iirc Cartier joined the cadre of watch manufacturers that can display the
Geneva Seal distinction on some of its timepieces.
That seal was created by the Geneva watch-making guild in 1886 to define and protect the quality of its products.
To obtain the seal, a watch must meet 12 criteria governing its construction and appearance; the movement must be mechanical and have been assembled and adjusted in the Canton of Geneva; and must have obtained official designation from the Bureau de Controle Facultatif des Montres.
The "Ballon bleu de Cartier Flying Tourbillon" was the first watch to get the Geneva Seal.
The 19 jewels 9452 MC is an inhouse crafted high end timepiece consisting of 142 parts. With a diameter of 10 and ¾ lines, it beats at the rate of 21.600 vib/h and provides a pr of about 50 hours.
Technical specifications (according to MC):
Case in 18 carat pink gold
Diameter: 46 mm,
Circular-grained crown in 18 carat pink gold set with a sapphire cabochon,
Sapphire crystal,
Transparent case-back with sapphire crystal,
Galvanic, slate-coloured guilloché dial, sun-ray open-worked grid with Roman numerals.
Sword-shaped, blued-steel hands,
Brown alligator-skin strap with dual adjustment folding clasp in 18 carat pink gold,
Mechanical movement with manual winding, 9452 MC calibre, bearing the Geneva Seal,
Flying Tourbillon with its C-shaped index indicating the seconds, diameter: 10 and ¾ lines,
Depth: 4.5 mm,
Number of jewels: 19,
Balance: 21,600 vibrations per hour.