The R300-HD is Wireless Handheld Microphone System. Includes R300 Receiver, and HT-300 Handheld Transmitter. The R300 Receiver with a sleek, low-profile design and durable construction, the R300 receiver system is equally at home on a table top or in a 48cm equipment rack. Its simple controls and easy-to-read display are designed to provide the ultimate in user-friendly operation. Rack-mount kits and front-mount antenna cables are available for professional installation. For applications with up to four receivers in one rack, the APD4 antenna. The HT-300 metal handheld transmitter is made to withstand the rigours of daily use while being comfortable in the hand. The units PL22 dynamic microphone capsule offers the perfect all-around solution for speaking, singing, and emcees. The PL22s cardioid pickup pattern rejects surrounding noise, helping to control feedback while still allowing an experienced vocalist to work the microphone. Features Designed for Club Sound, House of Worship, Performance Sports Venues and other applications. Designed for Club Sound, House of Worship, Performance Sports Venues and other applications. ClearScan finds the clearest channel available with the touch of one button. EZsync infrared channel transfer from the receiver to the transmitter for easy and error-free setup. PL22 cardioid dynamic microphone element for crisp, clear vocals in any application. 14 hour battery life from two AA alkaline batteries.