Rolex GMT-Master II (116758SANR) self-winding automatic watch, features a 40mm 18k yellow gold case with a sapphire and diamond bezel, diamond lugs surrounding a black dial on an 18k yellow gold Oyster bracelet with folding buckle. Functions include hours, minutes, seconds, date and GMT. This watch has been serviced and comes with the original warranty. Z Serial. Time remaining on the Manufacturer's service warranty!