This is a truly spectacular Rolex Day-Date. At 36mm the reference 18048 is outfitted with a diamond bezel and a diamond and rubies index dial. All within an 18K yellow gold case held together by a president bracelet. The Day-Date is powered by a Caliber 3055, which allows for a rapid date and day change. A quick fact about the watch: the 4 on the reference number signifies that the watch left Rolex facilities with its diamond bezel. This is a very important to note as some Rolex Day-Dates are often given aftermarket bezels.