Supports sampling rates (KHz): 8 / 11.025 / 12/16 / 22.05 / 24/32 / 44.1 / 48. 24-bit DAC output, support dynamic range: 90dB, support: 85dB. Fully supports FAT16, FAT32 file system, maximum support 32G TF card, support U disk to 32G, 64M bytes NORFLASH. A of control modes are available. IO control, serial port, AD button control mode. Radio spots language function, you can pause the background music being played. Advertising finished playing background sound continues to play back. Color: Black Material: metal The audio data is sorted by folder, supports up to 100 folders, folders can be assigned to 255 Tracks. 30 level adjustable volume, six adjustable EQ. Application: 1, car navigation voice 2, road transport inspectors, toll stations voice prompts 3, , bus safety inspection voice prompts 4, electricity, communications, financial operating room voice prompts 5, vehicles into and out of the channel to verify prompts 6. channel voice prompts 7, multi-channel voice alarm or voice guidance equipment operation 8, electric sightseeing bus safety with voice announcement 9, electrical and mechanical equipment failure alarm 10, fire alarm voice prompts 11, automatic equipment, regular Package included: 1 x DFPlayer Mini MP3 Player Module For Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.