Sound is great Sound is great! People hear me perfectly and can't tell I'm using a microphone. No comments from others on background noise so I assume it is blocking a lot of it. The only complaint I have is they aren't very secure in the ears. I have small ears and an using the smallest earpiece cover but they are heavy and there isn't anything additional to secure it to your ear. A small wrap around piece would be ideal. But otherwise, I'm very happy.

return with out problem i bought a pair of heaadphones they didnt work i sent them bac k they refunded my money with out a problem great company thanks a bunch nsmo

Outstanding!! Outstanding!!! fast response, great understanding in my need of product, best talk quality in ear headphones. Top shipment handling and no problems i customs. I'm very impressed and hard to please. Thank you Advance Sound

All in one quality device for great price Phone Recognize this device immediately. Playing at advertised bit rate and kilo hertz. Retains headphones’ button functions and allows use of microphone for calls and Siri. With added ability to charge while using this device —performs a variety of functions well in a small package. There are other dacs that will give you even higher quality but nothing out there that gives you this high of quality (better than cd) with all the other functions it brings to the table in a small package in just one single dongle. A must have at this price.

Great Value, Good Mic I bought this for Teams calls so that I would have a good microphone on a boom. Quality is excellent and I like the sound isolating ear buds.