USB/DACBALNames of PartsPower ON / OFF / Screen LockingOperation Instructions1. Power on: press button and hold it for 3 seconds, then device turns on.""2. Power off: press button and hold it for 3 seconds, show “Confirm Shutdown” window, click “Yes” to turn off the device." "the display will 3. Screen locking: when the device is powered on, press to lock screen and turn off the LCD display; to unlock it, press " " again.""Headphone/Line outputType-C USB data port2.5mm balanced headphone output3.2 inch touch screen (3 0x4 0)28Previous selection buttonPlay/Pause buttonNext selection buttonPower/Lock buttonVolume control wheelTF card slot