Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Microphone is Not Functional

This headset/microphone combo was supposed to be used lightly with Rossetta Stone. I plugged the device into my computer(a Mac) and I could hear everything perfectly but the microphone was not functional. I tried it on a PC and it still did not work. The headphone portion of the device works perfectly but without a functioning mic I was forced to return the device. Other than that everything worked fine, but what's a product that only does 50% of what is advertised?