Fiio X5 User Manual page 22

k) Power-off timers—Sleep
"Sleep" can be used to turn off the X7 after a set time, regardless of activity. This may be useful for e.g.
bedside listening.
The sleep timer may be set to any number of minutes between 0 (OFF; no timer) and 120.
l) Power-off timers—Idle poweroff
Idle poweroff is a setting for turning off the X5 after a set period of detected inactivity (no button presses,
screen touches or playing). The Idle poweroff timer may be set to any number of minutes between 0 (OFF;
no timer) and 50.
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