Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It has worked for me so far

It seems to be about as good a car charger as any that I have owned. The construction seems fine. It charged my W580i quickly. I am not sure what else to say, it is a car charger. I didn't need one before I started using my bluetooth headset more. But, for the price, this seems like a fine solution.