Instruct: Classify an Amazon review as either positive or negative.
Query: Great product, but rebate is a joke

The wireless mouse and keyboard have worked very well for the last two months. The product is sleek and works great. The mouse battery has worked for a week at a time. An overnight charging once or twice a week works fine.Having said that, do not buy this product because the warranty is a joke. I sent in everything the warranty card said for me to send in. Now, two months later, I receive an email stating that I didn't give them the UPC code. That is a lie. I included the invoice from Amazon, the UPC code, and the completed warranty card.I'm keeping the product because it is a good product, and it is such a hassle to return items bought online. I will never fall for the rebate trick again. BUYER BEWARE!!!