1、Auxiliary audio transmission: The standard 5mm audio output is connected to car-assisted playback for lossless transmission. 2、Scope of application: All car sounds have audio input for hearing aids. 3、Support Bluetooth hands-free function. 4、Support common function control functions (such as play/pause; previous songs; second song, etc.). 5、Support MP3 / WMA / music format files, songs support remote digital and digital frequency selection. Features: 1. Auxiliary audio transmission: The standard 3.5mm audio output is connected to car-assisted playback for lossless transmission. 2. Compatibility: Universal Bluetooth version. 3. Scope of application: All car sounds have audio input for hearing aids. 4. Support Bluetooth hands-free function. 5. Support common function control functions (such as play/pause; previous songs; second song, etc.). 6. Support SD card and USB compatible card reading function. 7. Support MP3 / WMA / music format files, songs support remote digital and digital frequency selection. Specification: Input: 12 ~ 24 V Output: 5 V / 2.1 A Signal to noise ratio: > 92 db Remote control battery: button battery CR1220 (Not Included) Play format: MP3 / WMA format Bluetooth version: Bluetooth 2.1+EDR Bluetooth audio processing: A2DP Bluetooth microphone action distance: 0.5-2m Bluetooth transmission distance: 10 m Display: part of the screen Support extension: USB disk is less than 64G FM: 87.5- 108.0 MHz Package List: 1 * Car Player 1 * Instruction Manual 1 * Remote Control 1 * AV Line