While some have said these are hard to put on it literally took less than five minutes, my other ones pulled right off and these right on it was very very easy. It doesn?t tell me how much it?s charged on the outside of the case which is kinda a bummer but other than that it?s a great set of headphones for the price I dont know if this is current firmware, but all EQ and filter options of any sort have ZERO effect while running this unit in DAC mode - they ONLY work if youre connected via Bluetooth and that is the biggest disappointment to me. The folks on the other end of the line tell me that their reception is clear. I even drank a beer while I did it, and it went just fine. Small carry case, take it anywhere. 4) The controls for the earbuds are on the earbuds themselves and are super sensitive one day and dont work at all the next day. I completely recommend the set to everyone. I love the ankle strap and I felt like I walked a lot better as I wore them and got used to them. Im so impressed with this product, fits like a second skin , easily slims me down several sizes.