Bluetooth connection: This portable MP3 player supports Bluetooth 5.4 for wireless listening, freeing you from headphone wires. Pair with Bluetooth headphones or speakers for convenient onthego playback. Store over 10,000 songs: The player supports memory expansion up to 128 GB via a memory card (not included), giving you ample space for your music library. Small design: 3.6 inches long, 1.57 inches wide, and 0.31 inches thick. It has a 2.01inch screen and weighs 26 g, delivering a compact, lightweight, and stylish device you can carry anywhere. Multifunctional: In addition to HiFi music playback, it offers practical features such as calendar, stopwatch, alarm clock, FM radio, photo viewing, and ebooks. Use scenarios: Daily commuting or workouts: Enjoy wireless music without cables, keeping you motivated during travel, gym sessions, or outdoor activities. Travel and daily planning: Use the calendar, alarm, and ebook viewer while on the road, with offline music and photos for entertainment and organization.