1、USB Bluetooth 5.0 audio receiver transmitter, 3.5 mm AUX stereo hole wireless music adapter for car TV PC headphones. 2、Bluetooth audio receiver and transmitter developed and produced using latest Bluetooth version 5.0. 3、Can used as Bluetooth audio transmitter to wirelessly transfer sound from TV and other audio sources to Bluetooth headsets or Bluetooth speakers (in computers and for android systems, supports direct audio transmission via USB without the need to plug in 3.5mm audio cable). It can also used as Bluetooth audio receiver, turning wired speakers into Bluetooth speakers immediately, freeing you from shackles of cables and enjoying wireless music. 4、With powerful wireless audio streaming function. Put this transmitter/receiver in your backpack or laptop bag and take it with you. 5、Wide compatibility, using supplied 3.5mm cable, this transmitter/receiver adapter can widely used in computers, laptops, home stereo systems, headphones, smartphones, MP3 players, for CD players, etc. 6、Extremely lightweight portable wireless audio transmitter/receiver, perfect wireless audio solution for various situations and usages. 7、Both Bluetooth audio receiver and Bluetooth audio transmitter, can also used as Bluetooth sound card for conversion and easy operation.