This business is awful! My husband bought a hoverboard from them. When it arrived it did not work. Engine was immediately hot, smelled like burning electrical wires and the right side of the board jumped back and forth. It was very dangerous! They wanted pictures and they wanted video so their "Engineer" could look at it. After sending everything they requested, they said their "Engineer" said it is working. All I wanted was an address as to where to send their defective hoverboard so that they could send us a working one. I am now working with American Express to rectify this situation. Do NOT purchase ANYTHING from this company as they are scammers!