Instruct: Classify Amazon reviews into positive or negative sentiment
Query: works well, not sure of quality

This works as expected, and is a very handy tool. My only complaint is that the retracting mechanism sticks like a bad roll up window shade. Sometimes you have to giggle it a lot to get it to retract all the way. I imagine this will get worse with age. However, even if it doesn't retract all the way, it still fits in your briefcase and continues to work as a sync cable and charger.