the sound is perfect, the small battery operated transmitter also allowing easy movement of the device on all audio. Turning off the headphones, the transmitter goes out alone after 5 minutes, it's useless practice to get up. I mainly listen to the TV with these headphones, sounds that are inaudible to the ear, are very clear even at low listening levels. the range is good, I live in a large apartment and 5 em wall begins to take cuts, but the scope was not the purpose of my purchase, I would have chosen a top model.
I am overwhelmed by this helmet, only negative already read from other reviews, the flat buttons (volume, +, - on and off) are barely perceptible to the finger, but we made it.