Jacob & Co. Astronomia Tourbillon Black Ceramic & Rose Gold Movement 50 mm watch. Model reference: AT100.95.KN.SD.B. Black ceramic case. Skeleton dial. Manual-winding movement. Black alligator strap with folding clasp. Swiss made. The watch comes in the original packaging, with a set of documents and 2 years warranty. At Modern Wrist we offer new authentic watches at the best prices.