Matte 1.8 Inch MP3 MP4 Music Player FM Recorder Non Slip Portable MP4 Player Built-in 180 mAh polymer lithium battery for 6-8 hours of continuous playback. Default English, built-in 13 languages can be freely switched. Break point playback. Adjustable power-saving mode and sleep mode, the perfect partner for relaxing songs at night. The MP3 comes with a card slot, which allows it to be used with a card, supporting MP3 music formats and AMV video formats. Support external memory TF card (not included!) Instructions: The middle button is the play button. Short press to pause and long press to shut down. The return key in the upper right corner: Short press to exit the menu or volume setting, long press to exit to the main menu mode; NEXT button on the right: Short press to switch to the next song file, long press the fast forward function. The upper left corner of the M (menu) key, press to bring up the menu interface; The + button above: Volume plus, or move the menu selection up; The - button below: Volume down, or move the menu selection down. LAST button on the left: Short press to switch the previous file, long press rewind function.