Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Traveling with a Useless PDA

Extremely poorly engineered product from Toshiba. I have experienced data loss problems multiple times after the battery runs low in 24 hours. The data is stored in RAM and no backup power supply is designed into the product. No warning is given as the PDA just refuses to start up. Even when the unit is turned off, the power is drained in 24 hours. This is a different issue from the e740 recall which loses data when changing the battery.PDA's are used by traveling business professionals!.Do NOT purchase the e335. I should have reviewed all the discussion boards which clearly express the problem with Toshiba PDA's.I have owned many Toshiba products, but this has turned me away from Toshiba forever.BTW the support people where quick to answer my questions and concerns, unfortunately their hands are tied to resolve the problem.