I bought this headphone as my other one has broken the sound quality is unreal I was certainly amazed at how amazing these are especially for the price its worth every penny. You can hear all music and voices clear and people can hear you clearly when your speaking through the headphones I haven't used the bluetooth function as of yet i've only used the wired connection so far.
You can plug an SD micro card in the headphones so you can listen to your music this way without needing your phone which is quite cool these are the first ever headphones ive seen that do this. there is also an FM radio player built into the headphones
overall these are the best headphones i have ever purchased I love the colour blue hence why i picked the black and blue colour