2x25W Amplifier DC 12V Model: -Y39 (Power: 2x25W) Bluetooth version 5.0 Bluetooth calling function recording function Music format:MP3/WMA/WAV/FLAC/APE lossless format music Radio FM frequency:87.5-107.5 MHZ Folder switching function Support function introduction: support MP3 / USB / TF / LINE IN / FM / BLUETOOTH / remote control connection / DC 12V About the structure: Panel size: length 75 x width 50MM, the panel is surrounded by screw holes, the depth of the panel is 20MM Keys and interface functions: 1. PLAY/PAUSE: short is the switch between pause and play; Long is FM automatic radio station; 2. PREV/VOL-: Short is to select the previous song; long to decrease the volume; Double click to switch to the previous folder; 3. NEXT/VOL+: Short is to select song; long to increase the volume; Double click to switch to folder; 4. LED: Digital screen display, showing red. 5. REPEAT: once for single loop, and then once to cancel single loop. 6. EQ: Sound field mode, testing 6 kinds of sound quality; (Classical) (Jazz) (Rock) (Bass) () (Normal) 7. Mode: Switch between USB/TF/FM/LINE IN/Bluetooth 8. AUX: Audio input interface 9. IR: infrared receiving module 10. TF: Connect TF memory card (maximum support is 32GB) 11. USB: Connect USB flash drive (maximum support is 32GB) Colour:As Shown Material:Plastic Package Contents: 1 * amplifier board 1 * remote control 1 set * wiring Only the above package content, other products are not included. Note: Light reflection 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.