Multi-Features of this Portable CD Player: 1. CD Playback: Support CD/MP3/CD-R/CD-RW CD playback format, dual speakers give us stereo surround sound quality, CD playback full of layers. 2. FM transmitter: FM transmitter function can transmit the music in the CD to the car stereo or radio through radio waves, and you can hear your favorite CD in the car. 3. A-B Repeat: Ideal for children and learners, this function can repeat the clip you need. 4. Anti-skip: Built-in anti-skip protection provides a stable audio experience while on the move, perfect for use in the car. 5. USB playback: Store your favorite songs on a USB flash drive, then insert it into the cd player and adjust it to USB mode and you're ready to play. 6. Sleep Function: Adjustable 10-90 minutes auto shut-off, you can fall asleep with the beautiful melody. 7. Bluetooth transmitter and receiver: Bluetooth transmitter can transmit CDs to other Bluetooth devices (e.g. Bluetooth speaker) for playback, Bluetooth receiver can play audio from other Bluetooth devices (e.g. cell phone). to Connect for Listening to Music 1. Transmit audio to the car radio via FM, which is stable and very easy to operate: a. Turn on the FM transmitter function of the CD and set the channel. b. Turn on the car radio and select the channel displayed on the screen of the CD player, then you can listen to the FM channel transmitted by the CD. 2. Bluetooth Connection: a. the Bluetooth transmit button when the device is playing CD. b.The device sends Bluetooth signal, turn on the Bluetooth headset/Bluetooth speaker, and you can listen to the CD music through the wireless headset/Bluetooth speaker after completing the connection. 3. AUX playing: If your car has an AUX socket, you can use the 3.5 mm AUX cable that came with your CD player for audio transfer: a. Plug the AUX cable into the CD player and car AUX socket respectively while the CD is playing; b. CD music be transferred to the car for playback via