Features: Support lossless MP3(32-320kbps), WMA, APE, FLAC, WAV song playback mode in SD/U card. Bluetooth-compatible music playback is supported Support Bluetooth-compatible APP function.(contact Flyerfish for app) Supports control panel keys SD card/U disk/BT/FM Previous (previous), Next (next), Volume adjustment, for Play/pause. Support power off memory function. Support AUX IN. Support USB Sound card and card reader Function. Support remote control function. Support FAT16 , FAT32 File system. Back-in priority functions are supported . The Module adopts for DC voltage DC7-12V. Support Folder Switch Function. How to use: 1. Power on this module via DC7-12 Power (for DC power only, Never use AC). 2. Add amplfier, Audio out to amplifier's audio in, amplfier's audio out to speaker (couldn'for t directly to speaker). 3 Plug music in via SD/U Disk/ Bluetooth. If install to car, highly advice use a voltage regualtor before connect to car's power. Button on panel: MODE: Press this for key to cycle through input USBSDBLUEFMLINE. Short press the PREV button in the USB/SD/BT playback status to select the song, press and hold for fast rewind (BT is invalid). Short press to select the previous one in the FM radio status. Radio. Long press to search for the station, search to the radio to for play the current station. Invalid AUX status. Press the NEXT button to select the next song in the USB/SD/BT playback mode. Press and hold for fast forward (BT is not active). Press to select the next short for time when you are in FM radio mode. Radio station. Long press to forward search station, search to radio to for play the current station. Invalid AUX status. for PLAY/PAUSE button: for PLAY/PAUSE: Pauses on USB/SD/BT. Press and hold this button to enter the automatic search radio station, FM/AUX Short press the status to mute FD+ for key to select folder in USB/SD state FD-key selects folder in the USB/SD state REP: for Play mode for USB/SD playback. Yes RANDOM (random for play)/1 (single repeat)/ALL (all repeat)/FOLDER (when The previous folder is duplicated. The state when the USB/SD player is powered on is the ALL state by default. Press the button again to enter 1 and press RANDOM again. Press FOLDER again, press again to cancel the repeat, enter the sequence for play, BT/FM/AUX is invalid, EQ: USB/SD status is sound field mode. NORMAL for POP ROCK JAZZ CLASSIC (Classic) COUNTRY (Country) The master volume defaults to the volume before the memory was turned off (30 levels in total). The default BT status, USB/SD support for back-in priority, power-off memory tracks/stations, and radio State/volume, all states are true spectrum. Remote control function: POWER: STANDBY ON/OFF MODE: Press this for key to cycle through the inputs USBSDBLUEFMLINE PREV: Short press to select the song in USB/SD/BT playback mode, press and hold for fast rewind (BT is invalid). Short press to select the previous one in FM radio status. Radio. Long press to search for the station, search to the radio to for play the current station. AUX status is invalid. NEXT: Short press to select the next song in USB/SD/BT playback mode, long press to fast forward (BT invalid), short press to select the next one in FM radio status Radio station. Long press to forward search station, search to radio to for play the current station. AUX status is invalid. VOL+: increase the volume VOL-: Volume reduction REP: for Play mode during USB/SD playback. Yes ONE/ALL..... (The status when the USB/SD player is powered on is the ALL state by default. Short press to enter ONE) STOP: Stop playing in the USB/SD card state, other states are invalid. MUTE: Press mute for all statuses and press again to unmute. EQ: USB/SD status is sound field mode. NORMALROCKPOPROCKJAZZCLASSICCUR for PLAY/PAUSE: Press once in the USB/SD/BT playback state to pause, press again to for play. Press this for key to enter auto Search for radio 0 to 9: Direct for key selection on USB/SD. More than 10 digits can be selected consecutively. Select the saved station in FM status. You can also press the number The word for key directly enters the radio frequency to for play the station. Bluetooth: Bluetooth-compatible Based on CLASS 2 power level, using Bluetooth-compatible 2.1+EDR specification, for Bluetooth-compatible 3 and below version application, the transmission speed can reach 3Mbit, Bluetooth-compatible transmission distance of less than 10 meters. USB sound card function: Support card reader function Support USB sound card function Connect to the computer through the USB straight line, you can make a sound card or SD card reader Use USB computer sound card: take one of the two are USB plug line, were inserted into the USB port and the USB port decoding board