Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Motorola T820

Great Concept - Connected to my PC fine - Maybe too many buttons to remember. The conference quality was ok. Bluetooth audio was Bad. Battery charger did not work. Interesting I could charge through the USB cable though. It was the most painful product I have ever placed on my head. I gave it away one week after I tried it out. The combination of a heavy headset and plastic over ear hooks that are shaped like a knife made it imnpossible for me to wear.