The Newton Pendulum Ball Physics Science Metal Balance Ball Home Office Decor Kids Educational Toy combines a physical orbit and and intriguing magnetism demonstration in one. With a simple construction, it demonstrates the law of conservation of momentum. Rotate the metal part with your hands, and it will keep swinging upon the power of batteries. This desktop toy is not only an educational toy for kids, but also a great way to take a break during a stressful day for adults.<!--Features --><p>FEATURES</p><ul><li> A swinging orbit that demonstrates physical laws</li><li> Rotate the metal part with your hands, and it will keep swinging upon the power of batteries</li><li> Operate on four AA batteries (not included)</li><li> The swing part is made of plastic and metal wire</li><li> Also an educational toy for kids</li></ul><!--Specifications --><p>Specifications</p><table width="100%" border="0" cellpadding="0" cellspacing="0"><tbody><tr><td width="131"> Material</td><td width="365"> ABS & Metal</td></tr><tr><td width="131"> Dimensions</td><td width="365"> (8.66 x 4.13 x 9.84)" / (22 x 10.5 x 25)cm (L x W x H)</td></tr><tr><td width="131"> Power Supply</td><td width="365"> 4 x AA Batteries(Not Included)</td></tr><tr><td width="131"> Weight</td><td width="365"> 9.17oz / 260g</td></tr><tr><td width="131"> Color</td><td width="365"> Silver & Black</td></tr><tr><td width="131"> Shape</td><td width="365"> Tellurion </td></tr></tbody> </table><!--Package Includes --><p>Package Includes</p><ul><li>1 x Newton Pendulum Ball</li></ul><!--Extra Info --><!--produts_compatibility -->