Instruct: Classify Amazon reviews into positive or negative sentiment
Query: IT'S A JOKE!!!

For $10.00 I bought this heater on the chance it would actually make a difference in defrosting the windshield,or providing instant heat on cold Chicago days.However, Given the fact it only is rated at 150 watts, it puts out less than one tenth the heat of your average hair dryer. And it never really gets all that warm because it is trying to heat frigid air.Also, the picture leads you to belive air flow comes out of the entire front vent-NOT!! THE MEAGER AIR FLOW ONLY DISCHARGES FROM LESS THAN HALF OF THE VENT.The bottom line is it's a piece of junk-don't even think it will do the job.