Model toy-style mechanism design, cool appearance, six-axis joint robot arm, no battery required, using "Pascal's principle" to control the arm movement only by adding water! Learning knowledge by doing: green energy driving force: hydraulic pressure, principle of mass conservation.
★ Scientific principle: Pascal's principle ★ Power source: hydraulic power ★ Applicable age: over 10 years old ★ Assembly time: 3HR ★ Difficulty: ★★★★☆ ★ Origin: Made in Taiwan, designed in Taiwan