The Hamilton W6-BT Bluetooth Wireless Listening Center allows you to connect to the wireless transmitter via Bluetooth with your tablet, mobile device or any unit with Bluetooth capabilities. The audio is then transmitted to the wireless headphones via a wireless FM signal. It is perfect for all multimedia, lab and classroom applications. Each system includes one transmitter and six headphones. The entire system can be switched between 4 different frequencies with easy color-coded switches. Add additional transmitters to have up to 4 different channels of audio simultaneously! Go Wireless in your classroom with plug and play simplicity.