Bluetooth 5.0 Transmitter Receiver 2 IN 1 Wireless Audio 3.5mm Jack Aux Adapter - Support audio equipment with audio input interface for wireless audio reception and transmission - Supports automatic search and connection of Bluetooth devices for wireless audio transmission ? Built-in AEC cancellation and ANC noise cancellation circuit, gorgeous stereo, more pure sound quality - Built-in enhanced signal transmission circuit for faster and more stable connection - Compatible with dual lossless audio formats