I confirmed the operation. Turning the key turns on the power and the light illuminates. The left-hand button honks the horn. The right-hand button starts the engine, and when you twist the throttle, you can hear the engine sound, and smoke (water vapor) comes out of the muffler. The rear tires rotate via chain drive. This is an extra-large size, approximately 33cm in length. It has a built-in rechargeable lithium-ion battery and is a heavy, adult-sized motorcycle.