Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Performs as advertised

This is the 2nd Power Dome. The 1st one had a defective compressor and Amazon replaced it immediately without first waiting for the defective one to be received by them. The replacement Power Dome works as advertised. Think of it as a small, portable generator with a battery. Updated April 9, 2010. The compressor quite working. I tried to use the battery charger, but it did not work. The only item that seems to work is the work light. As with most items such as these, one does not know how it will preform until the time that it is needed. This one failed miserably. It is too late to return it.