Earphone Output Interface ( )The interface is a standard 3.5mm earphone jack.TF Card PortThe port is only for the standard TF card and supports a capacity up to 256GB.Return/Backward/Forward/Play or Pause1. Return button : for returning on all interfaces, Hold it for going back to the homepage quickly.2. Backward/Forward button / : a. press once on the interface of my music or file browsing to page up/down.b. press to skip forward/backward and hold to fast forward/rewind in any interface. RESET ButtonThis button is for system reset. After pressing it down, the system will reboot automatically.Multi-functional Knob1. Rotate the knob: to select in menu browsing, and to adjust volume in playing interface or locked screen.2. Push down the knob: press to confirm and hold to call out the quick edit list in menu browsing; press to switch on/off the lyric in playing interface.3. Play and Pause : press to play or pause in any interface.Balanced Earphone Output Interface ( )The interface is a standard 2.5mm balanced earphone jack.ChargingThe charging icon and the battery power will be displayed on the LCD display when this device is charging with the USB cable. After fully charged, the device will be shut down automatically.
