<p>First, the main function: 1. Music format: MP3 \/ WMA \/ WAV \/ FLAC \/ APE lossless format music. 2, AC5322B Bluetooth version is version 5.0</p> <p>3, 2 * 3W, connect 2 3W speakers. 4, support TF card, support USB interface (U disk); 5, power failure memory function; 6, support 5-10 meters distance infrared remote control operation;</p> <p>7, support external audio input LINE IN (AUX); 8, support radio FM, receiving frequency band (87.5MHZ-108.0MHZ); 9, button: four buttons multi-directional control, the previous song \/ play pause \/ next song \/ MODE; 10, support MP3 \/ USB \/ TF \/ LINE IN \/ FM \/ BLUETOOTH \/ DC 5V; 11, on the structure: panel size: 85 * 32 MM, the depth of the board is 33 MM</p> <p>Second, the button operation details: 1. VOL-button (previous song\/volume reduction): In MP3 state, VOL-short press is the previous song, long press is for volume reduction; in FM state, short press to adjust one station number; in Bluetooth Short press under the function is the last song of Bluetooth, long press to decrease the volume.</p> <p>2. AUTO button (play\/pause): In the MP3 state, AUTO is short pressed to play\/pause; in FM state, short press is play\/pause, long press is for automatic receiving and saving; in Bluetooth function, short press to play \/.</p> <p>3, VOL + button ( song \/ volume increase): In the MP3 state, VOL + short press for song, long press for the volume to increase; short press in the FM state to adjust a station number; under the Bluetooth function Short press for song of Bluetooth, long press for the volume to decrease.</p> <p>4. MODE button: switch between USB\/\/FM\/AUX\/Bluetooth function.</p> <p>External Memory: Yes</p> <p>Balanced Out: No</p> <p>DSP: AC5322B</p> <p>Function: FM Radio</p> <p>Function: bluetooth</p> <p>Function: Build in Speaker</p> <p>Package: No</p> <p>Style: Car MP3</p> <p>Supports FM: Yes</p> <p>Operation Mode: Contact Screen +Remote Control</p> <p>Storage Type: Flash Memory</p> <p>Signal Noise Ratio: 3dB</p> <p>Battery Life: 20 hours</p> <p>Dimensions (WxHxD): 85 * 32 * 33MM</p> <p>Supports Recording Function: Yes</p> <p>Display Size: None</p> <p>Model Number: MP3 Decoder Board Audio Module</p> <p>Bluetooth: Yes</p> <p>Have Speakers or not: Yes</p> <p>Battery Specification: External Power</p> <p>Supports EBook Reading: No</p> <p>WIFI: No</p> <p>Colour: Black</p> <p>Material: ABS</p> <p>Screen: No</p> <p>Function introduction: support Bluetooth function \/ with amplifier 2 * 3W \/ double decoding MP3, WMA, WAV format music \/ read USB disk \/ read TF card \/ radio FM \/ external audio input LINE IN (AUX) \/ infrared remote control \/ power off memory \/ Power supply 5V</p> <p>Package Contents:</p> <p>1 * MP3 Decoder</p> <p>4 * 2P Cable</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>