Roger Dubuis Excalibur Carbon Spider (2017)

The inner structure of the movement is completely made of carbon. Skeletonized multi-layer carbon case in 45mm. Titanium DLC case back. Manual winding in house caliber RD509SQ done in such high quality that it received the Poinçon de Genève (Geneva Seal). 90 hours power reserve, flying tourbillon with carbon tourbillon upper cage. Limited to 88 pieces. Priced at 180,000 CHF