Over 530 hours of craftsmanship went into creating the robust 820SQ calibre movement that powers the Roger Dubuis 'Excalibur Spider' watch - featuring a signature skeleton structure and micro-rotor self-winding movement, so you can appreciate every detail. Limited to just 88 pieces, this Excalibur Spider Pirelli Limited Edition RDDBEX0706 model was developed in partnership with Italian premium tyre manufacturer Pirelli and features a durable strap made from the same rubber and tread pattern as found on some of the most innovative racing cars. The 45mm titanium case with a black carbon finish, scratch-resistant finish, comes to life in a new colour with green accents, with the crown, fluted bezel, hands and strap stitching all in a vibrant green. The watch will be produced in a limited edition of 88 pieces.