Bluetooth5.0 + Edr Wireless Connection to Various Bluetooth Devices Is Established By Connecting The Bluetooth Adapter to Non-Bluetooth Devices. It Stably Connects to Tvs, Stereos, Pcs, Mp3S, Cars, Speakers, Headphones, Smartphones And Tablets, And Reaches A Range of Up to 15M Outdoors And Up to 10M Indoors. . Upgraded 3-In-1 Transceiver The Usb Bluetooth 5.0 Audio Transceiver Can Stream Audio From Your Non-Bluetooth Audio Sources (Tv, Pc, Mp3, Cd Player Or Book Reader, Etc.) to Your Bluetooth Headphones And Speakers. You Can Also Make Your Non-Bluetooth Headphones And Speakers Receive Audio From Bluetooth Audio Sources (Cellphone, Tablet, Etc.). Easily Switch Between Transmit And Receive Mode With One Button . No Driver Required When Used On A Pc, Power And Audio Are Supplied Via The Usb Port. No 3.5Mm Audio Cable/Driver/Software Is Required. * Can Only Transfer Audio, No Files. . Usb Power Supply Usb Has A Power Supply Function. During Use, It Must Be Powered By The Usb Port (Such As Power Adapter, Pc, Car Charger And Other Usb Port). As Long As The Bluetooth Transmitter Has Power, You DonT Have to Worry About It Running Out of Power When Listening to Music. .