[Smooth Performance, Reliable Connection] -- The player features a 4-core MTK chip for improved responsiveness and smooth operation. It is equipped with advanced duplex Bluetooth for enhanced compatibility, ensuring seamless connectivity with Bluetooth headphones, speakers, and car audio systems. [Superior Audio-visual Experience] -- With a 4-inch high-definition display, supporting 720p and 1080p high-resolution videos along with HiFi lossless music playback, it encompasses everything that a premium MP4 player should provide. It offers an unmatched viewing and listening experience. [Extended Battery Life] -- This Bluetooth music player is powered by a built-in 1000mAh lithium battery and incorporates a low-power design, allowing for up to 50 hours of continuous music playback or 5 hours of video, along with a remarkable 500 hours of standby time. It fully accommodates your travel and sports needs. [App Management Capabilities] -- The digital music player allows you to disable or uninstall certain applications on the device, including FM Radio, Videos, Ebook, Browser, and Recorder, catering to your individual preferences. This feature is particularly beneficial for children, as well as elementary and middle school students.