Easy-to-Operate Portable CD Player: The simple design with an LCD display and main operation buttons on the product lid makes it easy to operate at a glance. Suitable for the elderly. (Note: Please turn the HOLD key on the bottom to OFF if you want to operate the CD player normally.) CD Player Useful for Language Learning: This CD player has five playback modes: single-track repeat (REP1), directory playback (DIR), all-track repeat (ALL), random playback (SHUF), and intro playback (INTRO), which plays the first 10 seconds of each song. It also has an A-B repeat function, making it the most suitable CD player for language learning. Type-C Power Supply/Battery Powered: Can be powered by two AA batteries (sold separately). Alternatively, it can be powered by connecting the included Type-C cable to an AC adapter (sold separately), PC, computer, or mobile power source. (Note: This product does not have a built-in battery and is not USB rechargeable.) In addition, it's palm-sized, so you can easily put it in your bag and carry it around, which is super convenient. It's most suitable for enjoying music quietly during your commute. ASP Anti-Shock Function & Program Function: The product has a built-in ASP anti-shock function that automatically prevents sound skipping. Also, the product is equipped with a program function, allowing you to play only your favorite songs and in your preferred order. You can select up to 32 songs. ★Note: This product is not compatible with all Blu-ray discs★. Wide Application & Includes Earphones: Compatible with audio files such as CD, MP3, CD-R, and CD-RW, it can be used in various situations, such as for relaxation, music appreciation, language learning, and prenatal education. Also, it comes with earphones, so you can enjoy music quietly during your commute, travel, or campaigns. It's also very popular as a wonderful gift or present.