D006BT Bluetooth MP3 Decoder U Disk Playback Audio Amplifier Board 1. 12V power supply, power failure memory 2. Bluetooth call and recording function, Bluetooth version 5.0 3. Decode MP3, WMA, WAV, FLAC, APE lossless format music 4. Read USB disk TF card 5. Support FM radio, frequency band (87.5MHZ-108.0MHZ) 6. External audio input LINE IN 7. Support 10m distance infrared remote control operation 8. Pushbuttons: six buttons for multi-directional control, REC REPEAT VOL- AUTO VOL+ MODE 9. Dimensions: L112xW62mm, D22mm Key operation details: 1. REC: press the REC button to start recording, press the REC button again to cancel the recording function and play the recording file; when recording than a storage device needs to be connected, e.g. U disk or TF card. 2. REPEAT: Press once for the single song loop function, then press again to cancel the single song loop and play in sequence. 3. VOL-key (previous songvolume down): short press for previous song in MP3 status, long press for volume down; short press for adjusting a station number upwards in FM status; short press for Bluetooth previous song in Bluetooth function, long press for volume down 4. AUTO button (playpause): short press for playpause in MP3; short press for playpause in FM, long press for auto receive and save station; short press for playpause in Bluetooth VOL+ button (next songvolume up): short press for next song in MP3, long press for volume up; short press for downward adjustment of a station number in FM; short press for next song in Bluetooth, long press for volume down 6. MODE button: switch between USB TF FM Audio input Bluetooth function in sequence