[Multi-function MP3 player]: Ruizu D50 MP3 player is not only designed with music playback, Bluetooth 5.0 connection, FM radio, recording, e-book reading (TXT file), video playback, photo browsing, but also supports built-in speakers (no headphones required) You can enjoy music), screen saver, alarm clock, pedometer, 25 languages, touch keys, etc. The sturdy metal body and portable size are very suitable for sports, fitness, running, travel, etc. A great gift for men, women and children $ [Upgrade Bluetooth 5.0]: High-speed, stable transmission and high noise immunity make it easy to use indoors and outdoors. You can play music through Bluetooth speakers or Bluetooth headsets. It can reduce the power consumption of the music player and keep you away from the cable. (Please note): This MP3 is a Bluetooth transmitter, not a receiver. It cannot be paired with mobile phones and cars. $ [HiFi lossless sound quality]: This Bluetooth MP3 player uses a intelligent digital noise reduction chip to ensure a high-quality and clear sound quality experience. This mp3 player supports playing popular music formats, including MP3/WMA/APE/FLAC/WAV//DRM/ACELP. [Note] Not compatible with iTunes and audiobooks. $ [16GB memory & up to 128GB expandable]: Built-in 16GB memory, can store about 4000 songs. It also provides a Micro SD slot for expandable memory and supports an external TF card up to 128G, allowing you to carry more music, videos, pictures and e-books with you. $ [Unique gift selection]: Exquisite and compact design, simple operation, exquisite gift packaging, enjoy a more pleasant experience. A great gift for family and friends.