Store and expand your music library: This MP3 player with Bluetooth supports over 10,000 songs and is expandable with a memory card up to 128GB (not included). It supports MP3, WMA, WAV, APE, FLAC, AACLC, M4A, OGG and other formats, so you can put your favorite songs in and create your own music space. Longlasting battery and quick charge: Builtin 500 mAh battery charges in about 2 hours and provides up to 48 hours of playback. HiFi lossless sound quality with private listening option: The player is built with quality speakers and a powerful sound decoding chip to restore original HiFi sound. It includes a 3.5mm headphone jack for private listening (headphones not included) and a recording function with lossless sound quality for clear voice reproduction. Stable Bluetooth 5.4 connection: Enjoy wireless listening without wires. Bluetooth 5.4 provides stable transmission and reduces interference. Note: Bluetooth functionality supports connections to Bluetooth headphones and Bluetooth speakers only. Multifunctional features: In addition to music playback, it includes calendar, stopwatch, alarm clock, FM radio, pictures, and e books, making it a practical everyday device. Giftready and versatile: A suitable gift for children, family or friends who value portable HiFi listening and offline access to media. Use scenarios: Daily commute or travel: Store thousands of songs, listen via Bluetooth headphones, and switch to private listening with the 3.5mm jack when desired, all with long battery life. At home or outdoors: Use the FM radio, read e books, view pictures, or set alarms and calendars for organization. Study or voice notes: Use the recording function to capture notes with fidelity, while enjoying lossless sound during playback.