Rolex Datejust 178240 is an unworn 31 mm automatic watch, crafted from Oystersteel, presented with its original box and papers. The Datejust, a design from 1945, offers a traditional profile. Its modest 31 mm case suits a slimmer wrist or a preference for an understated timepiece. This model transitions from day to evening wear. Key details Brand: Rolex Type: Automatic watch Line: Datejust Reference: 178240 Case Material: Steel Dial Colour: Black Bracelet Material: Steel