Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Does exactly what its supposed to do

A great basic GPS device that works exactly as advertised. Text to speech may be a nice perk, but you really don't need it, since a quick glance at the display gives you all the information you need.There are limitations you don't get with a higher end model however. You can't customize your route on a PC and upload it to the C320. Sometimes, it takes you on a wierd routing. It *will* get you there however, and if you're unfamiliar with the place, it probably doesn't matter if the route's not the most intuitive.