The MP3 player with Bluetooth 5.0 technology allows you to connect your Bluetooth headphones or Bluetooth speakers with faster transfer speed, more stable connection and lower power consumption, extending battery life. Large internal memory means you can store up to 8,000 songs in your pocket, and the MP3 player has a TF card slot. So if you're still worried about not having enough memory, you can do this Use a TF card with a maximum of 128 GB to expand. (Not included). This Bluetooth MP3 player has a 1.8-inch touch screen and an IPS screen design with a mirror surface. Scratch resistant. It can control and touch the entire screen, so you can operate the MP3 player like a smartphone. Line-In Record, this function can help you copy music that you can only listen to online but cannot download, connect the MP3 player to your computer/phone via an aux cable, then play the songs and start recording the music. You can record an FM radio programme and record the voice that touches your soul. The MP3 player can also be used as a recorder. The MP3 player also supports FM radio, e-book (TXT file), pedometer, photo browsing, screensaver, alarm, folder, 23 languages, calendar and stopwatch, etc. Perfect for sports, fitness, running, travelling, learning, working.