WIFI:NoDSP:AB5362B DAC:- Dimensions (WxHxD):106 * 25 MM, Body Material:plastic Bluetooth:Yes Supports EBook Reading:No Operation Mode:Touch Tone Storage Type:Flash Memory Have Speakers or not:No Supports FM:Yes Battery Specification:External Power Signal Noise Ratio:89dB Supports Recording Function:Yes Display Size:None Package:Yes Function:Voice Recorder,FM Radio,bluetooth,Build in Speaker Model Number:Bluetooth5.0 MP3 WMA Decoder Board Style:Pure Audio MP3 Battery Life:> 20 hours Screen:Yes Balanced Out:No External Memory:Yes Audio Format Support:MP3, WAV,WMA Origin:Mainland China Certification:CE Specifications Model: M15B Bluetooth version 5.0. Support lossless music playback, with power protection function (reverse connection will not burn the motherboard and the display will not light up) Infrared receiving: can match infrared remote control TF: Card slot connected to TF memory card (maximum support 32GB); SCREEN: Digital color screen display, red (color screen customization can be supported); AUX: Audio input interface USB interface: connect to U disk (maximum support 32GB); VOL-: Short press the previous song in the USB/SD state; short press the previous station in the FM state, and long press the volume to decrease. SCAN: Short press to play/pause in the USB/SD state, long press to automatically scan for radio stations in the FM state; VOL+: Short press a song in the USB/SD state; short press a radio station in the FM state, and long press the volume to increase; MODE: When there is SD card and U disk: the switching sequence is USBSDFMAUXUSB; when there is only U disk: the switching sequence is USBFMAUXUSB; when there is only SD card: the switching sequence is SDFM AUXSD. ; Main control IC: AB5362B Bluetooth IC: AB5362B Bluetooth version is 5.0 Music format: MP3 / WMA / WAV and other lossless formats Radio FM frequency: 87.5-108.0 MHZ Support function introduction: support MP3 / USB / TF / LINE IN / FM / BLUETOOTH / remote control connection / 9V-12V About the structure: Panel size: 106 * 25 MM, the two sides of the panel are the screw hole positions, the width of the board is 19.8mm, the depth of the board is 24mm