The Omega 28.10T1RAPC watch movement was developed in 1949 and was the first gents automatic-family movement with a ball-bearing rotor. It was later replaced by the 1239UT with a different rotor shape. Throughout its production period, there were detail modifications made, and it is unknown whether all calibres were made in the variant TC. The movement features a detached manual wind, similar to the 1249UC. The Omega 28.10T1RAPC movement includes the following functions: automatic winding, sweep seconds, date display, sweep seconds, automatic winding, and a calendar.