CERROPI Newton Cradle Balance Balls, Newton Pendulum with 7 Balls, Classic Newton Swing Ball, Science Physics Gadget | Desk Toys & Accessories, 70+ Sec Swingtime, Marble Base, Black

Well worth the extra cost for this fine Newton Cradle. Well made. Great materials. Works fantastic. Looks great too!

Very sturdy and beautiful. Purchased as a gift for employee and she loved the quality.

My husband loved this gift. He said it has a very attractive marble base with a lot of weight to it. It is made very well and does not look cheap. The balls swung with no issues, everything was balanced well. Great packaging with instructions. A great gift for anyone with an office setting. I included two photos that he sent me, I forgot to photograph it before he took them to work. As you can see it is a decent size with 7 shiny balls. You won't be disappointed.

A little pricey, but it's exactly as described and makes a good desk fidget.

We bought these as a gift for my oldest son. He's very into physics, so things like this entertain him for hours. He had a cheaper one, which he had received several years ago, but it didn't work well. That didn't stop him from enjoying it though. We decided buying him a nice, sturdy one was a good idea, for his birthday. He was exceptionally pleased when he saw this. The balls move a lot longer than they did with his cheaper one, and it's sturdy enough that he doesn't have to worry about it falling off his desk, from the force of the balls moving.

A very lovely gift! Excellent quality! Packed very well. Arrived quickly. Excellent price!

I purchased this for two purposes. My own enjoyment and as a hands on tool my the Physics labs I conduct for homeschooled students from elementary to high school. It held up well to many enthusiastic hands!

Great quality and fun for all. I hit this for my husband’s office and most can’t pass it without playing with it.

la publicidad dice que la base esta fabricada de marmol G y pero es de madera, el tiempo de balanceo afirman que es de entre 50 y 60 seg pero son 20-30 Seg, por la información engañosa no recomiendo el producto, pero si quieres una base de madera y que el balanceo sea de 20-30 Seg lo recomiendo, los materiales metálicos son de buena calidad y las bolas están alineadas correctamente. no cuenta con las tuercas que se ven en la imagen en la base de los postes metálicos.

I spent a lot of time going over reviews of many other Newton's Cradles, and decided on this one with the marble base. The base is a good weight and it works as well as I had hoped. Once started, it will continue on its own for just over a minute before coming to a rest. The item was well packaged.

Great quality, it works well.

PÉSIMO producto, no llegó el que esperaba. No es el mismo de la publicación. La caja/empaque estaba rota, muy maltratada y es una caja diferente al de las imágenes. La base NO es de mármol y el movimiento dura entre 6 y 7 segundos.

As described, well packed & presented *****