Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not so Great

I wnated this to use for my car. Reception was fine with Treo 650 however I couldn't hear the caller. Perhaps the headset did not fit my ear well or this unit was malfunctioning but it was worthless. I drive a car that is quiet so I wasn't asking that much of the unit. It was marginal in a quiet room. I replaced it with a Pantronics Discovery 640. Much more expensive but works well (see my other review)