To conserve the battery's charge, your Reader™ Digital Book includes automatic power saving modes. The Reader Digital Book will enter sleep mode after 10 minutes of inactivity. After 3 days in sleep mode, the Reader Digital Book will shut down/power off automatically. However, when playing audio or viewing a slideshow, this feature does not work. The automatic power saving modes cannot be turned off.
NOTE: If the battery's charge is low, the Reader Digital Book may automatically turn off within 3 days.