Specification Installation pitch: 92 mm wide Installation hole: 83 x 20 x 38 mm Overall dimensions: 107*25*38mm/ 4.21*0.98*1.5 " Input voltage:7-12V Descriptions 100% brand n_ew and high quality support 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. support power off memory function: memory play songs and volume before power off. Note: Non-smart phones (android) have to enter the passw_ord - 0000 Decoding board play mode instruction Decoding board in the absence of memory card or U disk,boot default to "audio input" mode,the screen display LINE Press "MODE" key on the panel or the remote control switch to bluetooth MODE,the screen shows "BLUE",can open bluetooth search connection at this time Press "MODE" key on the panel or the remote control switch to radio MODE,the screen display FM radio frequency,long press "PLAY" button automatic searching channel Press "MODE" key on the panel or the remote control switch to the U disk or memory card "play MODE",the screen displays the time schedule of the song The remote control instruction: POWER: STANDBY button cannot switch. MODE: TF card and U disk: switching sequence for USB→TF→Bluetooth→FM→AUX;Only U disk: switching sequence for USB→Bluetooth→FM→AUX;Only the TF card: switching sequence for TF→Bluetooth→FM→AUX;There is no USB and TF card: switching sequence for FM→AUX→Bluetooth. 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. VOL + : short/long press for music. VOL - : short/long press for music. REP:In USB/TF MODE,is the switch key between single repeat and whole cycle when play music,boot for all cycle. STOP: In the USB/TF MODE,short press to STOP the music play. MUTE: MUTE,press for MUTE,press again for relieve(also can relieve by VOL- /VOL+). EQ: Acoustic field MODE.The NORMAL→BAS→POP→ROC→JAZZ→CLA→CUT→NORMAL PLAY/PAUSE: In USB/SD/Bluetooth MODE for PLAY/PAUSE;In the FM MODE,long press for searching all channels and save. Packing Include 1 x Decoding board 1 x The remote control (no Batt_ery included) 1 x 2P plug wire with power supply reverse connection protection 1 x 3P audio plug thread NOTE Please allow slight deviation due to manual measurement. Due to light and screen difference, the item's color may be slightly different from the pictures.