Sony Reader Daily Edition 4-174-983-12(1) - Manual (Page 159)

159
Settings
“Device Shutdown”
Shuts down the Reader to minimize battery
consumption.
Hint
 You can also shut down the Reader by sliding the POWER
switch and holding it for more than 3 seconds.
Notes
 After shutdown, the Reader may take a few moments to turn on.
 You cannot receive periodicals by auto delivery while the
Reader is shut down ( page 40 ).