Upgrade Bluetooth V5.2TROND Bluetooth audio adapter equipped with upgraded Bluetooth 5.2 Chip, with high fidelity stereo sound. The Bluetooth adapter support SBC/AAC/aptX/aptX-LL/aptX-HD/aptX-Adaptive etc, with a stronger decoding ability and more stable connection. 2-IN-1 Bluetooth Transmitter ReceiverIn TX mode, Bluetooth transmitter allows you via 3.5mm AUX to transmit audio from non-Bluetooth devices to Bluetooth headphones or Bluetooth speakers. In RX mode, Bluetooth Receiver connected your smartphone to wired speakers/earphones through Bluetooth.