Bluetooth CD Player: Built-in high-performance Bluetooth chip, faster transmission speed, stable performance, strong anti-interference ability, support connecting to Bluetooth headset or Bluetooth speaker. Enjoy wireless music immediately. Note: This CD player will automatically connect to the Bluetooth device when pairing. You can only connect to the car stereo via AUX cable (not Bluetooth) Upgrade CD player: CD player and TF card player are available in two modes. The CD player has various modern functions. ASP: anti-shock system to prevent CD playback from being interrupted due to vibration; 5 kinds of sound effects: BBS, JAZZ, POP, ROCK, ORIGINAL; 4 kinds of play modes: repeat AB, repeat 1, repeat all, shuffle Compatibility: Widely compatible with CD, CD-R, CD-RM, MP3, CD-DA, MPS, WMA. AUX connects to all audible devices via its 3.5mm jack audio input. You can also connect it to speakers or headphones or car, this CD player gives you more options to listen to your favorite music. Note: Please check if your disc is spinning. If your disc format is not compatible, you will not be able to use it Power: At home, you can use the USB cable to instantly configure the CD player; when you're outdoors, you don't have to worry about power thanks to the 2 x 1.5 V battery (not included) Easy to use: on the top of the reader disc, there is an LCD display and buttons for playback functions; the side can easily adjust the volume; HOLD, lock buttons (not the power switch button). Note: Make sure the "HOLD" switch is in the OFF position before starting the machine