Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Are you Sirius

I bought 2 of these for Christmas presents. Installed 1 day before Christmas. It was very easy. Then I tried the other on Christmas Day and it took 2 days from all the traffic. It must have been a popular present this year. One would work with out supplied antenna, the other would not. I guess it depends on the vehicle. Vent mount is not the greatest. It would be better with a few more overpaid engineers trying to put in their car.