The Hape Propeller Steam Engine is designed for compatibility with other major wooden railway brands, expanding play possibilities. As the engine moves forward, the propeller rotates, creating a realistic train sound effect. It includes magnetic connectors for attaching to other wooden railway engines, cargo cars, and vehicles. The engine operates on two AAA batteries, with the front propeller spinning in both forward and reverse gear modes. It offers three gear settings: forward, reverse, and free-wheeling, providing versatile play options with or without battery power. Suitable for preschool-aged children, this propeller engine works well as a birthday, holiday, or travel toy.