The Eterna-Matic brand was launched in 1948 as a line of compact automatic movements for ladies watches. This was the first automatic watch movement from Eterna with a freely-swinging winding rotor and the first from any company to use ball bearings to support the rotor. The use of five ball bearings, as clearly seen at the center, would become a trademark of Eterna and the Eterna-Matic name would be adopted by follow-on automatic movement families and even complete watches from the company throughout the 1950s and 1960s.
The first to be introduced, in 1948, was Cal. 1199, a 10 ligne version. In addition to the free-swinging ball-bearing rotor, this movement was quite advanced, with three-dimensional integration of components and direct center seconds. Like all movements in this family, it was 5.35 mm thick. This was quickly joined by the smaller Cal. 1198, which measured 9.25 ligne in diameter. These were followed by even smaller versions, Cal. 1194 and 1195 at 7.75 ligne and 8.25 ligne, respectively, by 1950.
Cal. 1198 and 1199 were replaced by the more advanced Cal. 1319 and 1321, respectively, by 1953. The tiny Cal. 1194 and 1195 lasted a few more years.
| Cal. 1198 | 9.25 ligne (20.50 mm) | direct center seconds |
| Cal. 1199 | 10 ligne (22.10 mm) | direct center seconds |
| Cal. 1194 | 7.75 ligne (17.20 mm) | direct center seconds |
| Cal. 1195 | 8.25 ligne (18.30 mm) | direct center seconds |
