Be heard from anywhere in the room! This unit includes a powerful 20 watt amplifier that will broadcast voice far enough to allow users to be up to 200 ft. away. It's compact portable wireless voice amplification system includes a wireless receiver with built-in amplifier speaker and a rechargeable battery. Simply clip on belt pack transmitter and lavalier mic for complete wire free use. Includes built-in cassette recorder to record speeches, play music, etc.