Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not suitable for use in moving vehicle

I was not really impressed with this product. It seemed too sensitive to background noise and voice quality was not that great. Also, when you are out of range of cell service the unit beeps continually which was very annoying driving down the road. This was intended to replace a hard wired hands free system in my vehicle but just didn't cut it. I suppose in a very quiet environment it would be acceptable. I was probably expecting too much for what it cost.