Bluetooth CD Player: Built-in high-performance Bluetooth chip, faster transmission speed, stable performance and high anti-jamming capability, supports connected to Bluetooth headset or Bluetooth speaker. Enjoy wireless music without delay. 1400mAh Rechargeable Battery: Comes with a 1400mh lithium battery. You can use the included USB cable to charge for it, full charge at about 4 hours. Portable and convenient for you to carry it anywhere you want to enjoying musicMultifunctional: The CD player has various modern features. DIR: All the files can be played back repeatedly for mp3; 5 Sound Effects: BBS, Pop, Jazz, Rock, Classic; 4 Play Modes: Repeat a track, Repeat ALL, Play first 10s of file, Play in random orderMore Compatibility: Widely compatible with CD, MP3 CD, CD-R, HDCD formats, AUX connected with all audible devices 3.5mm audio input, like connecting the speaker or headsets or car.