There are two types of mobile interpreting equipment: interpreter grade and tour-guide grade. Tour guide equipment consists of a set of handheld devices serving either as transmitters or receivers. It is good for factory & site visits, roadshows, consecutive interpreting in noisy areas or for whisper interpreting to a group of listeners rather than only one.
The main difference pf Interpreter grade equipment is trans-receiving capability. That is, the interpreter transmitters also function as receivers of the floor. This allows the interpreters to achieve a much better hearing experience compared to tour guide systems.
Interpreter grade equipment also have easy-to-switch multiple channels and relay capabilities (interpreting in multiple languages from a pivot language).