This Audio-Technica ATW-3211N/831 3000 Network Lavalier System is perfect for presenters, speakers, and performers who need crystal-clear audio on the go. In a live event or presentation setting, it provides reliable wireless connectivity. The system includes an ATW-R3210N network-enabled receiver and an ATW-T3201 body-pack transmitter with an AT831cH cardioid condenser lavalier microphone. It has a 60 MHz UHF tuning bandwidth for great versatility in a crowded RF environment. The unique multifunction button allows for quick frequency switching if interference occurs. It offers features like True Diversity operation for fewer dropouts, an Auto Squelch feature for optimal range, and Frequency scan and IR sync for easy setup. The operating frequencies are in the DE2 band from 470.125 to 529.975 MHz with a minimum frequency step of 25 kHz and FM modulation. The maximum deviation and dynamic range vary by model. The total harmonic distortion is less than 1.0% at specific conditions. It has an operating range of 100 m in an open range environment and an operating temperature range from -5° C to +45° C.