Newtons Cradle Balance Balls Science Psychology Puzzle Desk Fun Gadget with Large Base (7 Ball Black)

Still working great! Every kiddo that comes over says the sounds, and watching it go is so satisfying. Great with 9-55 year olds lol.

The description says the balls will bounce for 15-25 seconds, which I thought was about what one could expect from a novelty desk toy. However, it actually lasts for about 2 seconds - literally bounce on the left, right, left... and dead. We tried many combinations of single balls, pairs, etc... always got the same result - after one bounce per side, the balls all began to jostle a bit and then died out within 1-2 seconds. It didn't even work well enough for me even to explain to my kids what was *supposed* to happen. Don't waste your money.

The energy transfer isn't quite right. It doesn't continue bouncing for very long, and is not very precise. However, for the money, it's a decent solid toy.

Doesn’t maintain motion for more than a few seconds. Looks good but isn’t impressive.

Returned this, it's a piece of cheap junk. The balls are so lightweight that they can't hold still - like you see in some of those amazing demo videos. Did not perform the same AT ALL!

Wife loved it and kids are constantly playing with it.

Works as advertised

perfect or a small moving metal cute item