It is through the El Toro that Ulysse Nardin attempts to lay claim to the title of manufacturer of the most consumer friendly perpetual calendar to ever grace the world of horology. This inventively designed perpetual calendar timepiece also features a handy second time zone function and is powered by the legendary in-house-manufactured Caliber UN-32 self-winding movement. These functions, along with hours, minutes and seconds are laid out on an immaculate blue and black dial with rose gold hands. Surrounding the dial is a smooth, round bezel engraved with 24-hr Arabic numeral markers in rose gold. This variation of the El Toro uses a sturdy blue rubber and 18K rose gold strap with deployment clasp.