Build a mesmerizing, decorative lamp that changes colors and mimics the undulating movements of a jellyfish in the water.     Lock different components of the planetary gear system in place to change the movement of the tentacles and create a range of hypnotic effects. Discover what makes this type of mechanical design such a versatile, robust, and durable option found in many practical applications, from bicycles and washing machines to cars and wind turbines. Observe how the three primary colors in the RGB LED can produce six different color combinations.     A full-color manual provides clear assembly instructions and explanations of how the inner workings create a lifelike illusion. Includes USB-C cord; no batteries required. Beautiful design with soothing motion and light effects A unique building toy that results in striking, functional room decor