The Shure Dual Wireless kit is a two pack lavalier receiver and transmitter. With the included lavalier packs you are capable of having two wireless microphones running from one transmitter. The kit uses two XLR outputs on the back to send the sound into either an XLR capable recording device or a mixer. This kit is typically used for large talks due to its wireless range and clip on lavaliers. For more information and test footage check out: https://www.shure.com/en-MEA/products/wireless-systems/blx_wireless/blx88?variant=BLX88E%3D-H8E