The RAe TEE II, later known as RABe EC, is a type of high-speed electric multiple unit trainset of the Swiss Federal Railways (SBB), which was used from the 1960s until the 1980s on several Trans Europ Express services.

It was designed to be compatible with four different railway electrification systems (different voltages in the overhead lines),[1] used by various countries in Europe, allowing it to operate on long international routes.

[1] Their new livery earned them the nickname "souris gris" (or "graue Maus" in German[2]), meaning "grey mouse".

Thereafter, they were employed only on two pairs of daily IC trains operating between Bern and Frasne,[1][6] which was continuing in early 1996.

1053, has been preserved, and in 2003 it was restored by the SBB Historic foundation to red-and-cream TEE livery.