Cartier's newest watch, the Rotonde de Cartier Astrotourbillon watch, is ready to make its debut. First introduced by Cartier at SIHH in the beginning of the year, the Astrotourbillon will be available at select Cartier boutiques across the U.S. from June 2010. The new model features the brands newest movement, the 9451 MC movement produced entirely in the manufacture’s workshops. It took five years to develop the highly advanced movement and is equipped with a tourbillon carriage.

Available in 18 carat white gold, reference CRW1556204 for $133,000 and in 18 carat rose gold, reference number CRW1556205 for $124,000. Each case is 47 millimeters in diameter and has a circular-grained crown in the corresponding metal set with a sapphire cabochon. The silver guilloche dial with black transfer Roman numeral markers is protected by a sapphire crystal. The case-back has a transparent sapphire crystal. The watch boasts a water-resistance of up to 30 meters. The watch is completed by a black alligator skin strap for the white gold version or a brown alligator skin strap for the rose gold, each fitted with a double adjustable folding clasp in white or rose gold.

The caliber 9451 MC Astrotourbillon movement is mechanical with manual winding. It measures 38 millimeters by 9.01 millimeters thick. It has a total of 187 components with 23 jewels. It beats a the frequency of 21,600 vibrations per hour and has an impressive power reserve of approximetley 48 hours. Each movement is individually numbered.