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. 278343rbr has a stainless steel case with a domed, diamond-set yellow gold bezel. It is available with a number of different dials and can be fitted with either an Oyster or Jubilee bracelet.