Previously owned Cartier Calibre de Cartier Astrotourbillon gents, Model # W7100028. Titanium round 47 mm case. Silver colored dial with black Roman numeral hour markers and sword shaped hour and minute hands. Titanium bezel. Titanium crown. Manual wind movement, Caliber 9451 MC. Crocodile leather strap with titanium deploy buckle. Water resistant up to 30 meters. Tourbillon- Compensates for differences in rate caused by a watch adopting different positions. The principle is to mount the balance and escapement in a rotating cage. The balance and escapement rotate around their common axis going through all positions to average out the errors. Tourbillon cages or platforms usually rotate once per minute but 4 minute and 6 minute Tourbillons are also found. The Tourbillon complication is an extremely difficult accomplishment to achieve and generally demands a high premium. 100% original and in great condition.

　　subject to availability