Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works for only 5 minutes

The speakerphone would lose it's bluetooth connection at exactly 5 minutes. My call on the phone would still be active, but I would be unable to hear anything on the speakerphone, nor could the person on the other end hear me. I would have to end the call and re-dial. And again be able to speak for only 5 minutes. I tried this with 2 different cell phones and had the same problem. So, I returned the product and asked for an exchange. The new speakerphone I received had the same problem (checked it with 3 different cell phones), so I decided to return that as well.Call quality was OK, but I did not see any point in using this speakerphone as I could only speak for a maximum of 5 minutes at a time.