HIFI and wide compatibility: CD player has high resolution lossless sound. Widely compatible with CD, MP3, CD-R, CD-RW, CD-DA, MPS, WMA audio files, perfect sound quality makes it a necessary piece of equipment for enthusiastic listeners.AUX is connected to the 3.5mm audio input of all sound devices. Note: Please check if your disc is spinning. If your disc format is not compatible, you will not be able to use it Enhanced CD Player: CD and TF card play two play modes to choose from. The reader has various modern functions. ASP: anti-shock system to prevent CD playback from being interrupted due to vibrations; 5 types of sound effects:BBS, JAZZ, POP, ROCK, ORIGINAL; 4 repeat functions: A-B repeat and repeat one and repeat all and play randomly Portable design: classic white, smooth appearance, perfect LCD screen, small portable music CD player; using professional intelligent digital noise reduction chip to ensure high-level audio experience; formusic lovers, language learners, pregnant women, the warmest gift for family and children Easy to use: on the top, the CD player has LCD display function and play function buttons; you can easily adjust the volume and the previous / next song; keep the button pressed to avoid accidentally touchingthe button. Note: Please check which side the HOLD" switch on is on and make sure that the "HOLD" switch is in the "OFF" position before lighting " Portable Walkman CD Player with Headset High Resolution Lossless Digital Audio Walkman LCD Display Programmed Play Personal CD Players for Car (White)