Review on Experience Unmatched Sound Quality with Sony WHCH710N Noise Cancelling Headphones: Wireless Bluetooth Over the Ear Headset with Mic for Phone-Call, Black by Eimei Suzuki ᠌

It does not completely cut off external sounds, in general, you can clearly feel the work of noise reduction by turning them on in noisy conditions - it becomes quite sharply quieter. Listening to music in the subway is quite comfortable. The buttons are well placed and easy to operate. I had a couple of models of wireless headphones (in-ear) and it was uncomfortable to answer calls, the interlocutors did not hear me well. There is no problem with this here. The headphones did not disappoint.