Here are the specifications of the Roger Dubuis Excalibur Spider Pirelli Double Flying Tourbillon (Model: RDDBEX0250) 1:1 Superclone:Case:45mm in diameter,
Size: 48 mm x 40 mm x 12 mmMovement: SWISS Tourbillon Manual WindingFunctions: Hours and MinutesCase: CeramicDial: Skeleton DialBezel: CeramicCrystal: Scratch-proof sapphire crystal with