The Movado 231 watch movement, utilized from 1976 to 1979, features several notable characteristics. The day and date display can be quickly set, allowing for easy adjustment. Additionally, the movement includes a sweep seconds function and incorporates automatic winding. Furthermore, the watch movement incorporates shock protection to enhance durability. Overall, the Movado 231 movement stands out for its implementation of self-lubricating plastic materials in parts such as the day/date mechanism and crown, as well as its unique use of a long, thin mainspring, resulting in a modified gear ratio within the train.