ROKR 3D Wooden Puzzle for Adults, Motor-driven Automatic Marble Run Model Kits With Balls, Spaceport & Night City & Link Pack

• 【Electric Marble Run】The Electric Marble Run includes 20 steel balls that cycle endlessly through the track, creating a mesmerizing display of kinetic energy and engineering, demonstrating the principles of gravity and motion in an engaging and educational way.
• 【USB Interface, No Battery Required】Simply connect the marble run to a USB power source for continuous operation. This eliminates the need for disposable batteries, providing a sustainable and hassle-free solution for endless entertainment without worrying about battery replacements.
• 【Tap Switch】Tap once to turn on the device, and watch as the tube lights up gradually; tap a second time to keep the light consistently illuminated, providing a steady glow throughout the marble run; to turn off the marble run, simply tap and hold the switch.
• 【More Orbital Branches, Infinite Loops】The set includes additional orbital branches that enable the marbles to loop continuously, creating a hypnotic and entertaining flow that is captivating to watch, ensuring a continuous and unending cycle that showcases the beauty of perpetual motion.
• 【Twin Cities United】The latest version of the Electric Marble Run offers enhanced features, allowing you to build more complex and dynamic structures. Unlock new levels of creativity and challenge with this advanced set, providing additional building options and exploring endless combinations.

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