Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good sound, poor design

No defect in the product's communication function, just in the design. The over-the-ear hook is too thick to share space with my glasses and made my ear sore. The function button is too small and very fiddly - hard to press without jamming the speaker even further into my ear, which brings me to the third problem: The protruding speaker pushed the tragus forward and made it sore too. One positive: The people on the other end of the line said the sound quality of this headset was better than the Motorola 500 I've been using. They'll just have to get over it, because I can't deal with a sore ear.