Cartier Rotonde Astro Tourbillon
The case, in 18kt rose or white gold, measures 47mm. The crystal is sapphire, as is the display back, and it is water resistant to 30 meters.
Movement is the manual-wind, Cartier in-house caliber 9451MC with 23 jewels, beating at 21,600 bph and with a power reserve of 48 hours.
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