The Unitas 12 watch movement is a mechanical movement featuring both rocker-bar and clutch winding mechanisms. It is available in two variations: the 900 variant lacks a date function, while the 950 variant includes a date display. The base plate of the movement has undergone a series of minor modifications, with the 901 variant lacking any specific changes and the 951 variant incorporating a date function. In addition, the 952 variant offers a 13''' size along with the date feature. The Unitas 12 movement supports the following functions: manual wind, sweep second, and date display.