Meizu X6 - Manual (Page 37)

4. Auto Off
5. Sleep
When there is no button operation during a preset time while the
player is stopped, it is automatically turned off.
You can choose: Off, 1 Min, 2 Min, 5 Min, 10 Min
Select Auto OFF and press the 'Menu ' button. Then choose a value
with the and buttons.
The player can be set to automatically turn off after a preset time
while it is playing.
You can choose: Off, 10 Min, 20 Min,30 Min,60 Min,90 Min,120 Min.
Select Sleep and press the 'Menu ' button. Then choose a value
with the and buttons.
Detailed Features by Menu
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OFF