The Audio-Technica Lot of 4 UHF Transmitter Bodypack 655-680MHz ATW-T210 is a set of professional audio transmitters designed for musicians, performers, and audio engineers. With a frequency range of 655-680MHz, these bodypack transmitters provide clear and reliable wireless audio transmission. The Audio-Technica brand is known for its high-quality audio equipment, making these transmitters a trusted choice for live performances and recording sessions. Easy to use and versatile, these bodypack transmitters are a valuable addition to any pro audio setup.