Physics Mechanics Toys - Balance Balls(metal Base Newton's Cradle)

2 pcs Home Office Desk Decoration: 1 pcs Pendulum ball collision model & 2 pcs Perpetual Motion Desk Sculpture ToyLEARN SCIENCE AND EDUCATE YOURSELF AND YOUR CHILDREN AT THE SAME TIME with this kinetic sculpture perpetual motion toy that works on the principles of magnetism to perpetually oscillate on any executive desk or table top at home or office. Uses negative polarity to go on and on.Perfect for home decor office desk sculpture. This balance mobile kinetic galaxy motion toy is great to use in any home or office desktop or table top as a decorative showpiece or as a fun office desk toy.perfect for use as astress relief toy. Watch the galaxy go round and round to relax and get relief from daily life stresses and anxieties. The electronic magnetic endless motion toy with its spinning and oscillating, swinging back and forward movements will amaze you and at the same time provide the relaxation from during stressful times.ALTERNATIVE TO FIDGET TOYS WILL HELP FOR AUTISM, ADHD, ADD is perfect for adults, children and kids to help with autism, aDHD, add.colour: Black + silverPendulum ball model:PERFECT PRESENT FOR KIDS - Something gets everyone's affection and makes a lively office decoration or executive gift. Our product is the perfect present for kids under 21, grandsons, psychology classrooms, science, physics classrooms. Also, it is great to relieve kids of stress and frustration.OFFICE PEOPLE LOVE IT - Our product is a great present for office decoration, your boss, husband, wife, boyfriend or girlfriend. Its unique design and holographic effect make it highlight over most office desk accessories. Your office will look great with our product.HIGH QUALITY - Stylish and innovative design. Solid foundation and swinging balls.VERSATILE - An exquisite decoration that can be placed in house,school or office .Educational purpose.Psychological purposeMEANINGFUL - Excellent educational and science gadget, own your very own piece of scientific history and explore significant values of physics.Material: metalPermanent instrument:size: 22.5x14.5x24.5cm. Battery Operated uses 4 AA size batteries (not included), and can be easily assembled. The magnetic kinetic sculpture cool desk top toy is great toy for men, women, children, seniors, girls, boys, and everyone including family and friends.Material: Stainless steel + plasticPackage Contents:1 * Pendulum ball model1 * Permanent instrumentOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.