Released to great acclaim in 2010, the Calibre de Cartier collection deviates from the classic designs the manufacturer is best known for, with strong masculine features resulting in a more sporty overall appearance. The watches are primarily defined by their modern, round case shapes, although they still feature the iconic Roman numerals that appear on so many of Cartier's timepieces. In total, there are three separate collections within the line: the Calibre de Cartier, the Calibre de Cartier Diver and the Calibre de Cartier Chronograph, while case materials range from stainless steel to exquisite rose gold, giving customers plenty of choices.