If you plan to use these headphones for conferences/calls with a non-samsung device, you' Pros below: and for its operation, the device must be only samsung - 12mm drivers Some cons: I have no confirmation of which codec is activated at all, the computer does not see the codec of these headphones, even through xcode, very strong noises, But if you connect a samsung phone to your phone, the microphone works fine, you will notice a slight delay - By the way, active noise cancellation (ANC) is very weak,