Not sure what all the negative reviews are about. Mine didn't come in a torn box, broken or missing parts. Both headphones work for me. I've seen some outrageous negative reviews. But mine was fine. As I stood in front of the car with a stethoscope, my wife started the truck and you can hear it getting louder as the engine is running. And all the little noises. For less than $20 this is a good buy. would recommend.
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