Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not ready for prime time

I tried this and found it is not ready for prime time.1. It seems everything causes static (e.g. 2.4 ghz telephones,networks, microwave ovens.2. The earpiece did not stay in my ear. It would fall out within seconds of placing it in my ear. Terrible design.3. If you do not have a bluetooth phone and need to use the base, it is totally unwieldy. The base is almost the same size as my phone!I returned it the day after I got it. Too expensive for what it is.