The new Excalibur Spider Pirelli skeleton – Automatic Skeleton ref. RDDBEX0575 in blue from the original Swiss brand Roger Dubuis was released in a limited edition of 88 copies and was the result of a joint collaboration with Pirelli, known for its technical and industrial innovations on a global scale, the only supplier of premium tires for the world's leading motorsport competitions. This model is released exclusively for Roger Dubuis brand boutiques. This year, Roger Dubuis presented a new product for 2017. This version of Excalibur Spider Pirelli impressed the most. A large 45-mm model of the Roger Dubuis Excalibur Spider Pirelli watch with an open view of the watch mechanism is made of titanium with a black DLC coating. The rich blue color stands out against its background: the inner flange, the tips of the hour and minute hands, the rubber ring on the winding crown, the seam is made on the strap. Inside the case beats a reliable Swiss-made watch mechanism, caliber RD820SQ with a micro-rotor. Watches with a working time of up to 60 hours. Its design is assembled from 167 parts and meets all the requirements of the Poinçon de Genève certification. The watch is worn on a black rubber strap with an insert combining RubberTech material with rubber from high-performance Pirelli tires. Clasp: double adjustable folding clasp made of titanium with a black diamond-like coating.