The RENFE series 102 and 112 are high-speed trains, which are referred to as “Talgo 350” due to the design speed of 350 km/h. The power cars are derived from the ICE 1 and were built by Adtranz/Bombardier. Due to their special, aerodynamically optimized shape, they were nicknamed “El Pato” (the duck). The coaches are derived from the Talgo 7 and each have a single-axle bogie with passive tilting technology between two cars.

The first series of 16 sets was delivered between 2000 and 2004. They have twelve coaches with seats in three classes and a bar car. There are several kitchens scattered throughout the train. Between 2008 and 2010, 30 additional sets were delivered, which have a larger number of seats thanks to only two classes and one less kitchen. Due to these changes, these sets were designated series 112.