Cartier's Calibre watch made a splash in 2010 as the brand's first mass-produced piece with an in-house movement. This was a big deal, as only a few of Cartier's high-end watches had previously featured this. The round case has a modern feel, but the classic Cartier touch is not lost with its sword-shaped hands and Roman numerals. In 2011, a bracelet option was added and a chronograph was introduced the following year. A smaller 38mm version joined the collection in 2015. The W7100039 model boasts a stainless steel case with a pink gold bezel and a sleek silver dial. To complete the look, it comes with a stylish stainless steel and pink gold bracelet