Model No: USBPLAY16 UPC: 692868872761 Brand: VOCOPRO Country of Origin: United States VOCOPRO 16CH WIRELESS MICROPHONE/USB INT Microphone systems utilize the 900MHz frequency band, far from radio, TV, and Wi-Fi interference. USB-MC mixes all the mics together and sends a clear signal to your computer or smart device for easy streaming and recording. Also has a mixed mic-level output to easily connect all the mics to a powered speaker. USB-MC is powered by your computer or smart device and does not require additional 110V outlet.