Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great little BT Headset, but with a major flaw

Received this headset today and was excited about having it. It connected with no issues to my BB 8310 and was working fine until I was on a call and received another one. I tried to switch over using the "Answer" key on the phone and while it did switch I had no audio. I then tried more test calls and got the same issue. I then called tech support and they informed me that the headset doesn't support call waiting? What kind of headset doesn't support that feature? It is because of this glaring flaw that I give this device two stars.