Very subtle thumb curve and a very, very subtle groove for the index finger. Good for noise canceling and the mic is very clear. Seriously, is it 2005? Not Mac compatible. I bought these shoes for my daughter and I wanted to make sure that I got the ?real deal?. Dont plan to hang anything on them. I tried stacking 2 wave effects in a relatively simple way, and it wouldnt adjust the speed for whichever was on the bottom layer, throwing off the sync. Actually thats another advantage, as with headphones everything is coming through your ears so its more difficult to distinguish). My plates had CHINA written on them in bold letters. My only concern was there were no instructions on how to use and connect to it. If, however, you intend to use this as your primary streaming device and want to enjoy HDR and Atmos from Netflix, keep looking.