The Ulysse Nardin 9 is a manual wind mechanical watch movement that features a sub-second function. It is similar to the ETA 1132 but has a larger base plate. The movement is often or always marked with the signature 1120 on the dial side. The specific differences between the Ulysse Nardin 9 and other movements such as the 1121, 1123, 1125, 1127, 1129, 1131, 1139, and 1289 are not known. The Ulysse Nardin 9 movement was commonly used during the period around 1950.