---
product_id: 43578743
title: "Newtons Cradle Balance Balls Science Psychology Puzzle Desk Fun Gadget with Large Base (7 Ball Black)"
brand: "bojin"
price: "FREE"
currency: TND
in_stock: false
reviews_count: 8
url: https://www.desertcart.tn/products/43578743-newtons-cradle-balance-balls-science-psychology-puzzle-desk-fun-gadget
store_origin: TN
region: Tunisia
---

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

**Brand:** bojin
**Price:** FREE
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Newtons Cradle Balance Balls Science Psychology Puzzle Desk Fun Gadget with Large Base (7 Ball Black) by bojin
- **How much does it cost?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/43578743-newtons-cradle-balance-balls-science-psychology-puzzle-desk-fun-gadget)

## Best For

- bojin enthusiasts

## Why This Product

- Trusted bojin brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description



## Images

![Newtons Cradle Balance Balls Science Psychology Puzzle Desk Fun Gadget with Large Base (7 Ball Black) - Image 1](https://m.media-amazon.com/images/I/61sGXj6tzfL.jpg)
![Newtons Cradle Balance Balls Science Psychology Puzzle Desk Fun Gadget with Large Base (7 Ball Black) - Image 2](https://m.media-amazon.com/images/I/61ZChFZbQ2L.jpg)
![Newtons Cradle Balance Balls Science Psychology Puzzle Desk Fun Gadget with Large Base (7 Ball Black) - Image 3](https://m.media-amazon.com/images/I/51WQrCbeZeL.jpg)
![Newtons Cradle Balance Balls Science Psychology Puzzle Desk Fun Gadget with Large Base (7 Ball Black) - Image 4](https://m.media-amazon.com/images/I/610m5CFACKL.jpg)
![Newtons Cradle Balance Balls Science Psychology Puzzle Desk Fun Gadget with Large Base (7 Ball Black) - Image 5](https://m.media-amazon.com/images/I/61R54EUXsbL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    It is so satisfying
  

*by G***N on Reviewed in the United States on April 23, 2019*

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.

### ⭐ 1.0 out of 5 stars







  
  
    Waste of money
  

*by E***T on Reviewed in the United States on February 23, 2019*

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.

### ⭐⭐⭐ 3.0 out of 5 stars







  
  
    OK for the price
  

*by B***E on Reviewed in the United States on March 8, 2019*

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.

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**Shop now:** [https://www.desertcart.tn/products/43578743-newtons-cradle-balance-balls-science-psychology-puzzle-desk-fun-gadget](https://www.desertcart.tn/products/43578743-newtons-cradle-balance-balls-science-psychology-puzzle-desk-fun-gadget)

---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-28*