Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not worth it

I received this product in record time, but after installation I realized the unitwas not as good as the ball and string I had been using for years. For one thingyou can't see the beam of light to aim your auto from side to side, you can only use it to stop if you are lucky enough to see the beam sitting down in the seat.I would have given this a "0" but that wasn't an option.