With USB and TF Card Slots: Unique USB flash drive and IT card playback mode, which can read music files from USB flash drive or IT card at the same time for lossless playback, equivalent to a player with additional card reading function. Make your usage scenarios wider Bluetooth 5.3 Adapter: Bluetooth 5.3 greatly increases the speed of audio data transmission, listening to songs does not get stuck, but also ensures lower latency and high sound quality, on the other hand, it extends the effective transmission distance up to 10 m. Meet the needs of life. Hands-free calling and navigationBuilt-in microphone of the Bluetooth adapter in the car, multi-function button with one click to answer/hang up/reject or reselect a call. Connect the 3.5 mm AUX converter of the Bluetooth port to the AUX interface of the vehicle. Connect your mobile phone to the car radio, so you not only talk, but also listen to dynamic music and the transmission of CVC8.0 noise cancelling dual connection: Our Bluetooth audio receiver uses CVC8.0 noise cancelling technology and a DSP chip that allows both clear listening and authentic voice transmission. to eliminate echoes and block annoying background noise (such as wind, traffic or crowds), which can give you a CD level music experience. The portable Bluetooth receiver can be paired with two devices at the same time