Rechargeable Battery and Bluetooth 5.3 Transmitter: This portable CD player features a built-in 2000mAh rechargeable battery, providing over 6 hours of playtime on a single charge, making it ideal for travel, car rides, or daily use. With its advanced Bluetooth 5.3 transmitter, you can wirelessly stream your favorite CDs to Bluetooth speakers or headphones. (Please note: Bluetooth is for CD audio transmission only; it cannot receive audio from mobile phones/tablets.) Built-in Dual HiFi Speakers and Private Listening Mode: Enjoy rich, powerful sound from the built-in dual stereo speakers without additional equipment. When you want a personalized listening experience, simply plug in the included wired headphones for clear and pleasant audio. Easily switch between shared and individual listening modes. Multi-format Playback and LCD Screen: This multifunctional player supports CD, CD-R, CD-RW, MP3, and WMA formats. It also features a USB interface for direct playback of MP3 files from USB flash drives. The easy-to-read LCD screen allows you to effortlessly browse tracks, and five playback modes (sequential play, single track loop, all loop, A/B loop, and random play) give you complete control over your music. Portable Travel Design: This compact and lightweight CD player is designed for on-the-go use – you can put it in your backpack, use it in your car, or place it on your bookshelf. A convenient \"lock\" button prevents accidental button presses during travel, ensuring you can enjoy music wherever you are.