Bing Extend Storage 16GB internal storage, which lets you store up to 5,000 songs. in addition, the Micro SD card slot supports TF Card to extend memory stores(NOT INCLUDED). 800MAh Capacitance800 mAh battery capacity with original fast charge to charged and you can enjoy music quickly. After 3 hours of full charge, you can enjoy reading e-books continuously for 30 hours, recording time of 60 hours and playing music for 100 hours. Multi-Functional MP3 Player This Multifunctional bluetooth mp3 player not only support video play, file browser, recording, video, calendar, e-book, picture, A-B repeat, but also support time screensaver, pedometer, variable speed playback, equalizer. 1.8inch TFT Screen & Touch ButtonMP3 player has 1.8 inch high resolution colorful Large Screen. Designed with 6 High-Sensitivity Touch Button and 1 independent power button, it allows control the player more efficiently. You can easily put it in your pocket. Transmission Function This updated mp3 player not only has the Bluetooth function, but also provides the transmission function. It can directly transfer the music and data played on the mobile phone into the machine, and easily enjoy wireless high-fidelity lossless music