The updated Rolex Datejust 31 was introduced in 2018 in either rose, white or yellow gold - all powered by the new caliber 2236. The two tone 'Rolesor' variations were added to the collection one year later.Ref. 278289RBR-0023 has a white gold case with a diamond-set bezel and a Blue dial. It is available with a number of different dials and comes on a President-style bracelet exclusively. This configuration was added to the collection in 2021.