Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Pagemark Dictionary

I ordered one of these, and one for my book reading friend. I kept mine, and wrapped hers. I just got to see her yesterday and was embarrassed when she opened hers, to find that the AAA batteries were corroded. I went back home and checked mine and my batteries, too were corroded.After we both replaced the batteries with our own, it appears to work well.