With bluetooth audio receiver module, when cell phone and bluetooth module matching contion, the MP3 or nondestructive APE files via bluetooth sent to the product of the bluetooth receiver module to play, which has greatly helped the function of the product and entertainment. This product also be like ordinary MP3 decoder board,play U disk or TF card MP3 files, as well as the radio broadcast.Support power off memory function: memory play songs and volume before power off.The remote control instruction:1. POWER: STANDBY button cannot switch.2. MODE: TF card and U disk: switching sequence for USBTFBluetoothFMAUX;Only U disk: switching sequence for USBBluetoothFMAUX;Only the TF card: switching sequence for TFBluetoothFMAUX;There is no USB and TF card:switching sequence for FMAUXBluetooth.3. PREV: In USB/TF / Bluetooth MODE,short press for PREV;In the USB / SD MODE, long press for fast rewind;In FM MODE, short press for last channel, long press for scan search last channel.NEXT: In USB / TF/Bluetooth MODE,short press for NEXT;In USB / TF MODE,long press for fast forward;In FM MODE,short press for next channel,long press for scan search the next channel.4. VOL + : short / long press for music. VOL - : short/long press for music.5. REP:In USB / TF MODE,is the switch key between single repeat and whole cycle when play music,boot for all cycle.6. STOP: In the USB / TF MODE,short press to STOP the music play.7. MUTE: MUTE,press for MUTE,press again for relieve(also can relieve by VOL- /VOL+).8. EQ: Acoustic field MODE.The NORMALBASPOPROCJAZZCLACUTNORMAL9. PLAY/PAUSE: In USB/SD/Bluetooth MODE for PLAY / PAUSE;In the FM MODE,long press for searching all channels and save.Special Features: MP3 PlayersOSD Language: EnglishInput voltage:7-12 VItem Weight: 0.04kgInstall Size: 1 Din(This product withoutbluetooth calling function, with no power amplifier, only cont to an external amplifier can it use)Support signal switch directly. Support USB, TFSupport bluetooth (Bluetooth3.0 EDR) (after been paired with mobile phones can realize wireless music play)Support USB / TF / Bluetooth/FM / LINE switch. MP3 / WMA, WAV lossless music decoding chip.Support USB / TF card switch, PREV, NEXT, fast forward, fast rewind, volume, EQ, play / pause, stop, single repeat, mute, shutdown and direct election.Support Bluetoot PREV, NEXT, volume, EQ, play/pause, mute, turn it off.Support FAT16, FAT32 file system. Support for MP1 Layer3, MP2 Layer3, MP3 Layer3 version of the song.Support 32-320 KBPS MP3 songs.colour:blackMaterial:Plastic + electronic componentssize:Product size: 10.7*2.5*3.8cmInstallation pitch: 92 mm wideInstallation hole: 83 x 20 x 38 mmOverall dimensions: 107 x 25 x 38 mmPackage Contents:1* decoder1* remote control (without battery)3* power cord setOnly the above package content, other products are not included.Note: Light shooting 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.