Too long delivery times (the date has been exceeded for a week), but this is not the fault of the seller who sent the product on time. The shell is slightly heavier and thicker than the official device, but the compatibility is good. The buttons are of comparable quality to the official (ten days of use, no worries). I recommend to people who, like me, have one (or two, in my case) joysticks to repair and do not want to buy additional controllers. Very good value, but provide for delivery of three to five weeks (shipped from China).