[. . . ] [. . . ] 5) Volume Adjustment: Long press on VOL and short press on PREVIOUS to minimize volume or short press on NEXT to increase volume. 6) Record: press M to open the record, press PLAY/PAUSE button to start/pause the record, Long press M to save the record and return back Main-Menu. 9）Please connect with the computer with USB cable when you want to charge, and make sure the switch button to ON position. 10) If don’t use MP3 for a certain long time, push the switch to OFF position. [. . . ] [. . . ]