This Sennheiser EW300 EM300 G3 GB Wireless Microphone Radio Receiver operates between the frequencies 606-648Mhz Ch38, offering a reliable and high-quality wireless connectivity for all your audio needs. Designed in a sleek and professional form factor, this microphone receiver is perfect for use in pro audio equipment, musical instruments and DJ equipment. The Sennheiser brand is known for its expertise in producing high-quality audio equipment, and this model is no exception. Get ready to elevate your audio experience with this top-of-the-line microphone receiver.