I learned that your sound card, windows, ect, will turn any headphone into surround should you choose, there is no need to buy a USB surround branded (marketed) headset for this. I always have made my own wood runners but of course here in the South they swell in the summer to point your sled jigs won?t work. Battery is just as good as anything else, and the case is SUPER small, fit great in my pocket. save your money and go to Walmart their $5 slippers are better and at least they arent hot glued so comfortable and easy to use. 9m and it?s still easy to fit remove the bikes, and could probably have got to 2. Le ho dovute restituire perché sebbene fossero un 21/22 calzavano piccole a mio figlio /01/2021: Anker did reach out to me yo try to rectify or see if maybe I had gotten a defective unit. The piece in between the toes is hard and not flexible. Overall a great buy.