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Buttons and Ports Labeled/Operation Explained 1. Power on/off and wakeup Hold the Power/Lock button to turn on the M3 Pro. On the first startup, click the preferred language onscreen to enter the main UI. Hold the "Power/Lock" button while the M3 Pro is on, clicking "Yes"...
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Buttons operation: When the M3 Pro is playing music with screen turned off, you can switch to previous track by holding the "Vol +" button and switch to next track by holding the "Vol -" button.
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★If the voltage of the charging adapter is too high, the M3 Pro may be damaged. Please choose an appropriate charger; a DC 5V/1A USB charging adapter is recommended. ★In the likely event that the M3 Pro hangs up, you may hold the "Power" button for 10 seconds to force a shutdown.