["Excalibur Spider - Skeleton automatic RD820SQ caliber - titanium black DLC skeleton case - 45mm - Bi-material strap \r\nExclusive partnership with Pirelli: world pioneer in technical and industrial innovations and sole supplier of premium tyres to the worldÕs flagship motorsports competitions. Playing with the famous color codes of Pirelli, the surprise comes from the strap featuring rubber inlays from certified Pirelli winning tyres having competed in real races Ð and adorned with legendary tread motifs reproducing the profile of a Pirelli CinturatoT intermediate tyre. The robust 45mm skeleton case with its black DLC titanium elements and contrasting with Pirelli mythical tyres colors touches provides a perfect frame for Calibre RD820SQ. The design and height of the famous Roger Dubuis micro-rotor effectively enhance the spectacular 3D effect favoured by the Manufacture, as does the raised position of the Astral Skeleton. As well as enjoying the key ÔPirelliÕ signature characteristics linking their high-octane timepieces with a landmark motorsports victory, lucky owners of this 88-piece limited edition."]