The noise reduction feature works really well to cancel out sounds like motor engines. The battery life is very good than the description given. The bass on these headphones are top-notch overall. The bass is the standout point for these headphones, its deep and has plenty of impact. The sound quality is very good too, slightly recessed, but suitable for the types of music that Dr. Dre makes. I use them to mostly listen to dance music, which they do a good job at. Packaging on this item is professional and the headphones themselves are stylish in my opinion with its slick design. Overall I think these are good headphones, quite suitable for their target market. I'm not sure about value for money even though it was worth it, but for the sound quality, build quality, noise reduction, and style im sure they will be appreciated by many. I would definitely take these over Bose headphones and any other types available. There is nothing left to say about these headphones except if price is no option for you then you should definitely buy these headphones. Also, there are earphones available that have some of the features and design as the headphones for which you could buy if you are short on money.