Can you use Leitner wireless in Europe?

No, and we probably shouldn't try it

And here is why!

Leitner headsets sold in the US are set to the correct frequency for your territory which is 1920 - 1930 MHz.  In Europe the DECT frequency is different 1880 - 1900 MHz so this frequency would be required to meet the regulations.  As the EU approval for our wireless headsets is based on units with the correct frequency, using a US version would also not be covered by the approval. 

Furthermore, these headsets are designed to work with the outlets that run at 110v, and many European outlets run at a much higher voltage, often around 220v. This amount of power could fry the Leitner, so you should probably purchase locally.