Both can operate, but can only run on flat surfaces with normal rails. They cannot climb slopes. We cannot guarantee the functionality of the motor after purchase. Batteries are not included. There is peeling of the face, overall paint peeling, scratches, dirt, tire degradation, and damage to the connecting parts. Please check the photos. Stanley's running sound is a bit noticeable. The reason for being a junk item is that there are △ screws in several places on both, and the screws are stripped and cannot be opened, or they are rusted and cannot be opened, so we have classified them as junk items. White ○ parts (photos 10, 11, 17, 18) The battery replacement area does not use △ screws, so it can be opened. They function, but please purchase only if you understand that they are junk items.