The Rolex Datejust Ref. 126203CSO is a luxury watch featuring an automatic movement, Calibre 3235 mechanism with a 70-hour power reserve. It boasts an analog display with date functionality at the 3 o'clock position and comes equipped with a domed champagne dial marked by index hour markers. The case combines stainless steel and 18K yellow gold materials in a round shape, measuring 36 mm in diameter, featuring a solid screw-down back, scratch-resistant sapphire crystal glass, and is water resistant up to 100 meters or approximately 330 feet. Functions include hours, minutes, seconds, and date indication. This Oyster watch includes a stainless steel and yellow gold bracelet with a screw down crown mechanism.