The Eterna 1248UT is a mechanical watch movement that was introduced in 1965. It features a micro rotor and has a double jewel bearing if equipped with 30 jewels. The movement incorporates a double excenter regulator for curb pins and a stud carrier. It also includes a self-winding gear with direction switching enabled by a pinion floating between two large jewels. The indirectly driven minute and second hands allow for a low profile design. Minor modifications to the base plate and simplified date driver were implemented since around 1966/67. The Eterna 1248UT movement offers automatic winding capabilities and a date function that can be set by changing the 23-24 hour marker. From approximately 1966/67, the date setting was changed to the 22-24 hour marker. This movement has been in use since 1965.