Audio-Technica Freeway Series Handheld System ATW-702 Audio-Technica's frequency agile 700 Series Freeway wireless delivers professional features and sound quality unheard of in its class. These easy-to-use wireless systems feature eight selectable frequency-coordinated channels diversity operation for increased range/reliability automatic frequency scanning Tone Lock squelch and more. For multiple-mic applications as many as eight systems may be used together. Visual feedback is provided by an LED channel display as well as by antenna and AF Peak indicator lights. Balanced XLR and unbalanced 1/4-inch output connectors allow the 700 Series receiver to interface with the most popular audio inputs. This system features a cardioid dynamic mic/transmitter and includes stand mount mic clip. Up to 12 hours battery life on two AA batteries. UHF Operating Range: 542 - 561 MHz (TV 26-29) Number of Channels (freqs): 8 Freq Stability: +/-0.005% Operating Range: approx 200 ft.