The speed is great and the memory is good no need for a SD card. PROS:- Super comfortable- The feel like they are a high quality product, whereas other headphones feel like youre sticking a plastic shard in your ear- Sound quality is pretty good listening to music and taking phone calls- I think they look pretty goodCONS:- A little expensive for headphones, but if youre picky like me the comfortable-ness (made up word :P) of these really makes up And I don?t even use the noise cancellation setting since I really can?t tell much of a difference with it on or off. Makes my years of abusive footwear disappear. Ive found Dansko sizing to be a little inconsistent, so I normally order two sizes and return one. Edit: Multiplayer is fun but I wish there were more modes! They will do whatever it takes to make you happy and satisfied. This fan is light and VERY quiet and really cools well, but unfortunately it trips the USB outlet in my car, it is too powerful for it. They feel good sitting in your ear 100 percent secure. They are comfortable and have great battery life.