WIFI:NoDSP:- DAC:- Dimensions (WxHxD):- Body Material:plastic Bluetooth:Yes Supports EBook Reading:No Operation Mode:Touch Tone Storage Type:Flash Memory Have Speakers or not:Yes Supports FM:Yes Battery Specification:External Power Signal Noise Ratio:89dB Supports Recording Function:Yes Display Size:None Package:No Function:Voice Recorder,bluetooth,Build in Speaker Model Number:Bluetooth MP3 WMA WAV Decoder Board with amplifier Style:Car MP3 Battery Life: Screen:YesBalanced Out:No External Memory:Yes Audio Format Support:FLAC,ape,MP3,WAV,WMA Origin:Mainland China Certification:CE Feature 1:Support folder playback Feature 2:Support call Feature 3:Support recording Feature 4:Support power off memory Feature 5:Color screen display power supply:DC6v-20v Feature 6:Support song format MP3 /WMA / WAV / APE / FLAC Feature 7:true stereo dual channel Feature 8:Power 50W (2*25W) Feature 9:Bluetooth 5.0 Feature 10:Bluetooth speaker Feature 11:mp3 music player Feature 12:mp3 player with bluetooth Feature 13:bluetooth mp3 module 12v Feature 14:FM Radio Module Bluetooth MP3 Feature 15:mp3 bluetooth fm amplifier Feature 16:module for bluetooth speakers battery:no included DC 6V 12V 18V 50W Amplifier MP3 Decoder Board Bluetooth 5.0 Car MP3 Player USB Recording Module FM AUX Radio For Speaker Handsfree Board add Box 1*MP3 Decoder Board +1*Box Only Decoder Board 1*MP3 Decoder Board Only Box Only 1*Box ,not MP3 Decoder Board Key Description: USB: Connect U disk (maximum support 32GB, not included) LED: Digital color screen display, red infrared receiver module TF: Connect TF memory card (maximum support 32GB, not included) AUX: Audio input interface VOL-: Short press is to select the previous song; long press is to decrease the volume PLAY/PAUSE: Short press is to switch between pause and play; long press is to automatically search for radio FM VOL+: Short press is to select the next song; long press is to increase the volume MODE: USB/TF/FM/AUX/BLUETOOTH sound switch