Cartier Santos 42 mm – Pre-Owned The Cartier Santos 42 mm is an iconic luxury timepiece known for its distinctive square case, exposed screws and timeless Cartier design. This model features a stainless steel case with an 18K yellow gold bezel, paired with a sophisticated silver-tone dial and bold black Roman numeral markers. Powered by a reliable automatic movement, the watch comes fitted with a premium brown leather strap, giving it an elegant yet versatile appearance.