I confirmed the operation. Turning the key turns on the power. The engine starts with the button on the left, and the lights turn on. When the accelerator bar is turned, the engine sound is heard, the tires rotate, and smoke (water vapor) comes out of the muffler. Chain drive does not work. It's an ultra-big size, approximately 33cm in length. Built-in rechargeable lithium-ion battery. It's a heavy, adult-sized motorcycle.