Instruct: Classify Amazon reviews into positive or negative sentiment
Query: HORRIBLE. Save your money.

Waste of money and time. All the positive reviews have to be employees. This radar detector is the worst thing I have ever bought. I have had it two weeks now (unfortunately not returnable). There are soooo many false alerts, it will drive you crazy! You don't get 5 minutes of peace and quiet. Who wants a radar detector that picks up EVERY signal in the vacinity. And you can't block false alerts, after a point it just tells the device to 'mute'. then it comes back in 3 minutes, until you unplug it. I think it was invented and sold by the police dept, because there are so many false signals you just end up ignoring it, so you will never know which one was in your path. Save your money, time and peace of mind.