The complex sapphire crystal case of the Twin Turbo Furious posed an enormous challenge. The unique five-sided 57mm x 52mm case of a ‘regular’ Twin Turbo Furious has 88 components; this sapphire version has 89. Developing the case in sapphire crystal took 15 months to design, produce and perfect and involved growing the sapphire crystal from aluminium oxide, then shaping the case through a combination of high-tech numeric machinery and traditional hand polishing. Machining the different geometric planes and angles of the case, including the signature twin bezel, were complicated tasks, but so was hand-polishing the crystal to achieve its transparency. The only part of the case that isn’t made of the sapphire crystal is the 18k white (or rose) gold crank at 3 o’clock that winds and sets the complications. The three watches are differentiated by the coloured chapter ring made of Neoralithe, a material produced from resin and developed in Switzerland. With a choice of red, green or blue, the material is resistant to UV light, thermal and physical shocks. The Bugatti watch has a ‘Bugatti Blue’ Neoralithe chapter ring and features the company’s logo on the front.