Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A waste of money

I bought this as a replacement for a slightly older Microsoft wireless keyboard that was stolen. The other board/mouse used bluetooth, and was great. This one uses a different system with a long cord & reciever unit, as opposed to a small plug in USB.My main complaint is that it frequently drops a letter or number here and there. This would not be a big problem if you are writing a letter to your Aunt Margie, but if you are entering financial data, it is a very big deal.Varying the distance from the reciever to the board makes no difference. Ditto with fresh batteries, even Duracells.There are plenty of other good board out there, so do not waste your time on this one.