Fangrui Product Details 2 In 1 Mitter Receiver: Fer Audio From Non-bluetooth Devices (such As Tv, Computer And Airplane Entertainment Devices) To Bluetooth Headphones Or Speakers; Receiver Mode: Mits Audio From A Bluetooth Audio Source (smartphone, Tablet, Tv/bluetooth Computer) To A Non-bluetooth Headphone/speaker/stereo For Car/home Via A 3.5mm Audio Cable. Note: If You Want To Connect To Your Tv, We Recommend You Use The Charger For Power Supply And Then The Audio Cable To Connect To The Tv, Otherwise It Cannot Be Connected To Use. Latest Version Of Bluetooth 5.4: Lower Latency, More Stable Connection And Clearer Sound Quality Thanks To Bluetooth 5.4 Technology, Which Maintains Synchronization Between Picture And Sound. Maximum Range Up To 10 Metres. It Is Recommended To Use An Audio Cable Instead Of A Usb Cable If You Use A Usb For The Audio Input Directly And Then Start The Decoder Delay. One-click Mode Ing: Simply Press A Button To Quickly Between Mitter And Receiver Mode. When The Bluetooth Adapter Is Turn