Aicharynic Bluetooth 5.0 2 in 1 Audio Transmitter Receiver Bluetooth Adapter: - Compatibility with audio devices with audio input for wireless audio reception and transmission. - Supports automatic search to connect Bluetooth devices and perform wireless audio transmission. - Built-in AEC echo reduction and ANC noise cancellation circuit for beautiful stereo and purer sound quality. - Built-in enhanced signal transmission circuit for fast and stable connection with continuous sound. - Compatible with dual lossless audio format and support for AUX OUT and Earphone. - Automatic memory connection function for easier operation and more convenient connection. - Long-lasting built-in battery and low power consumption with Bluetooth 2.1. - Real voice prompt for simple and clear operation. - Intelligent compatibility with Android devices, iOS system, mobile phones, PAD and all Bluetooth audio devices.