Supports audio equipment with audio input interface for wireless audio reception and transmission. Supports automatic searching and connection of Bluetooth devices for wireless audio transmission. Built-in AEC echo cancellation and ANC noise reduction circuits deliver wonderful stereo and purer sound quality. Features a built-in, enhanced signal transmission circuit for fast and stable connection. Compatible with dual lossless audio formats. Supports AUX IN/OUT. Automatic memory connection function for easier operation and more convenient connection. Built-in battery for long battery life. Smart compatible with Android, IOS system mobile phones and PADs, and all Bluetooth audio devices. The product connection is simple, without any cumbersome driving and downloading APP. Launch mode supports a one-drag-two function. Supports stereo in transmit mode.