Many people have recognized that the easiest way to improve audio quality during virtual meetings or e-learning is to change the microphone. Digital wireless microphones with MiconChip technology are the new turnkey solution. Wireless microphones connect directly to USB computers via a USB receiver. No cables, no complicated setup—your computer powers the USB microphone receiver with a built-in sound card, for plug-and-play on PCs and Macs. Now you won't be required to speak up or move closer to your laptop to be heard. Each USBCAST system comes with a USB wireless receiver the size of a USB drive and two wireless microphones. This allows more than one person to participate in the virtual meeting, yet maintain social distancing without being restricted by microphone cables. Features: Dual USB Wireless Bady Pack System. Lightweight backpack with headset and lavaliere microphones, as well as an instrument cable for maximum diversity. Two users can use the microphones simultaneously without interference or setup. Operates on 900 MHz away from radio, TV, and WiFi interference. The transmitters connect quickly and quietly, allowing you to freely turn the microphone on and off as needed. The transmitters sync with the USB receiver automatically, with fast TaptoSync functionality to avoid interference. AA alkaline batteries.