Go wireless in your classroom with plug and play simplicity. Connect to the wireless transmitter via Bluetooth? with your tablet, mobile device or any unit with Bluetooth? capabilities. Audio is then transmitted to a nearly unlimited number of wireless headphones via a wireless FM signal. Perfect for all multimedia, lab and classroom applications, the system includes one wireless transmitter, six headphones and a storage rack. Easily switch between 4 different frequencies with color-coded switches. Add additional transmitters to have up to 4 different channels of audio simultaneously!