Instruct: Classify the given review as either positive or negative.
Query: Cobra 4500

The unit operates as good as any other GPS system available, plus it has a great big screen of 5 inches. I am very impressed with the GPS, but the mount used to attach the unit to the window or dash is very poorly designed. The unit falls off the window and from the dash, plus the power cord comes out too easily. The unit deserves a five star rating, but because of the mounting system and power cord coming out too easily a four star rating was provided.