Sony 3803775 User Manual page 243

 Never wrap the Reader in anything when it is being
charged. Heat build-up in the Reader may cause
malfunction or damage.
 If the battery quickly runs out of power after being fully
charged, it may be reaching the end of its life and should
be replaced. Consult Sony Support Center.
Wi-Fi connectivity
The Wireless LAN functionality has passed Wi-Fi
certification and complies with the interoperability
specifications established by WFA (Wi-Fi Alliance).
Table of Contents
Precautions
242