Instruct: Classify a given review into positive or negative sentiment.
Query: dictionary definition of a poor product

Not only was the product dead on arrival (could never store a charge on crank), the customer service for the manufacturer based in Chicago was terrible. I was kept on the line for over an hour. Not only were they unfamiliar with the product, but they also refused to replace it. It was all together an awful experience.The non charging dynamo is a common problem -- beware. This is not to be trusted in an emergency, but if you do get a working product it might make an OK toy.