Instruct: Classify Amazon reviews into positive or negative sentiment
Query: kindle review

Likes: readabiliyfast downloadsdislikes:-no customer service to call or email if there are questions or problems. There is asubstanitial amount of service to take your order, but no one seems to care whathappens after you have bought it.- your extended warranty was presented without saying upfront what it would cost.- battery life not substantial..after two days of reading it needs to be recharged-would like a back lite so you could read in an area that is not well lighted-waiting 5 sec to turn off system is too long...have on off switch