The WM40U is a wireless microphone operating on the UHF frequency with a very wide range of applications. Thanks to the included signal receiver, terminated with a universal 6.3 mm jack connector, this device can be connected to all portable speakers equipped with a microphone input or devices with a short-range wired microphone. The supplied adapter can be used if an external audio device has a 3.5 mm standard microphone jack. Once the signal receiver is connected to the speaker and the microphone is switched on, the devices will automatically pair with each other and be ready for use. The microphone has a high frequency response ranging from 65Hz to 18kHz ensuring very good, detailed sound.