1. Large storage capacity: This MP3 player supports expandable memory up to 128GB (microSD card not included), allowing you to store over 10,000 songs. It is compatible with MP3, WMA, WAV, APE, and more formats, making it easy to curate a large music library of your favorites. 2. Exceptional sound quality: Built-in HiFi speaker and advanced decoding chip deliver lossless sound that brings your music to life. Whether using the speaker or the 3.5mm headphone jack, you’ll hear every detail and nuance. 3. Effortless connectivity: Bluetooth 5.4 technology enables seamless wireless connections to headphones or speakers. Enjoy stable streaming without wires or interruptions. 4. Versatile multimedia functions: In addition to music, this device includes a calendar, stopwatch, alarm clock, FM radio, and e-book reading. It’s more than an MP3 player—it's a compact companion for daily tasks. 5. Use scenarios: Ideal for commuting, workouts at the gym, or travel and study sessions, providing music, books, and utility features in one device.