---
product_id: 250894046
title: "Fun Science Salt Water Robot Educational Toys"
brand: "4m"
price: "₩40827"
currency: KRW
in_stock: true
reviews_count: 12
category: "4 M"
url: https://www.desertcart.kr/products/250894046-fun-science-salt-water-robot-educational-toys
store_origin: KR
region: South Korea
---

# STEM + sustainability Multi-use modular parts 7 eco-friendly builds Fun Science Salt Water Robot Educational Toys

**Brand:** 4m
**Price:** ₩40827
**Availability:** ✅ In Stock

## Summary

> ♻️ Power your child's curiosity with eco-friendly science magic!

## Quick Answers

- **What is this?** Fun Science Salt Water Robot Educational Toys by 4m
- **How much does it cost?** ₩40827 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/250894046-fun-science-salt-water-robot-educational-toys)

## Best For

- 4m enthusiasts

## Why This Product

- Trusted 4m brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Comprehensive Modular Kit:** Includes copper washers, rubber bands, and recycled parts to spark creativity and repeatable projects.
- • **Innovative Salt Water Power:** No batteries needed—powered by safe, clean salt water and charcoal for sustainable energy learning.
- • **Build 7 Unique Eco Creations:** Transform everyday waste into gravity-powered robots, hovercrafts, and more for hands-on STEM fun.
- • **Perfect for Eco-Conscious Gifting:** Lightweight, ready-to-use kit ideal for classrooms or curious kids eager to innovate responsibly.
- • **Boosts STEM & Environmental Awareness:** Teaches recycling, mechanical motion, and clean energy principles through engaging experiments.

## Overview

The 4M Fun Science Salt Water Robot Educational Toy is a hands-on STEM kit that empowers kids 8+ to build seven mechanical models using recycled materials and salt water power. This eco-conscious kit combines engineering, chemistry, and environmental education in a reusable, battery-free system designed to inspire creativity, sustainability, and problem-solving skills.

## Description

Buy 4M Fun Science Salt Water Robot Educational Toys online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: Very good - Good experiment
Review: Good - Good

## Features

- ♻️ Transform everyday waste into working science toys—kids build seven cool eco creations like a gravity‑powered robot, bottle tornado, and hovercraft using recycled bottles, caps, CD parts and simple connectors.
- 🔧 Includes multi-use components—copper washers, rubber bands, CD connectors, plastic caps, wooden bead, string, pipe cleaners, dropper and double‑adhesive tape—designed to combine trash and imagination into repeatable projects.
- 🧠 Supports STEM learning and environmental awareness—children aged 8+ learn recycling principles, mechanical motion, gravity, centripetal force and clean energy while assembling hands-on, upcycled toys.
- 🌱 Encourages design thinking and creative problem-solving—kids use a 12‑page illustrated guide to repurpose real trash items and modular parts, planning and building eco toys with real mechanical function.
- 🎁 Ideal for eco-conscious gifting or classroom eco-labs—lightweight, self-contained kit comes packaged as ready-to-use resource for sustainable science exploration without plastic overload.
- ✅ From trusted 4M Green Science line—safe, educational materials and clear instructions blend engineering creativity with environmental responsibility in one innovative waste-to-toy system.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00AV8XBGG |
| Assembly Required | Yes |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #6,416 in Toys ( See Top 100 in Toys ) #20 in Toy Robots #54 in Electronic Learning Toys |
| Color | Brown |
| Customer Reviews | 4.3 4.3 out of 5 stars (4,789) |
| Date First Available | 7 May 2013 |
| Educational Objective(s) | Chemical reactions and alternative energy sources |
| Item model number | 3688 |
| Language | English |
| Manufacturer recommended age | 5 years and up |
| Material Type(s) | Plastic |
| Number of Puzzle Pieces | 1 |
| Product Dimensions | 6.35 x 16.51 x 21.59 cm; 117.93 g |
| Remote Control Included? | No |
| tech_spec_battery_description_toys | None (powered by salt water and charcoal) |

## Product Details

- **Age range (description):** Kid
- **Brand:** 4M
- **Item dimensions L x W x H:** 6.4 x 16.5 x 21.6 centimeters
- **Size:** 1 EA
- **Theme:** Water & Salt Properties

## Images

![Fun Science Salt Water Robot Educational Toys - Image 1](https://m.media-amazon.com/images/I/71mNtK-NRZL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: What kind of functions develop this robot? What does it do?**
A: It goes forward.  That is it.   It took my son and I about 10 minutes to build it, and it ran for about 30 minutes before the battery need to be cleaned, and rebuilt.

**Q: How many watts is the LED lightbulb?**
A: The power depends how fast you spin the windmill.The forward voltage drop of an LED is typically 2 to 3 V. Let's say 2.5V.A current of 20 mA (0.02A) will produce a bright light. That's probably close to what you get with a fairly strong wind turning your windmill.The power dissipated in the LED in this case is 2.5 x 0.02 = 0.05W = 50 mW.

**Q: Is included the elements, for example charcoal, aluminium or salt? And is included some pieces of science kit as tube, ect?**
A: It a simple kit,  included small slides aluminum, carbon, works fine but is small,  from kids 4 old years. Needs salt and water not included in the box.

**Q: Does this only work once? My son can't get it to go a second time. Wondering what to do.**
A: It will work multiple times. Make sure after each use to clean the battery parts with water and allow to dry before reassembling

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very good
*by R***H on 28 March 2023*

Good experiment

### ⭐⭐⭐⭐⭐ Good
*by M***D on 12 November 2021*

Good

### ⭐⭐⭐⭐ works well !
*by W***S on 1 December 2023*

fantastic! However, a gentle reminder: the parts are small, so it's crucial to follow the age limit to ensure safety and avoid any choking risks. Other than that, it's a brilliant educational toy that engages young minds.

## Frequently Bought Together

- 4M Toysmith, Green Science Salt Water Powered Robot Kit, STEAM Powered Kids, Beach Toy, For Boys & Girls 5+
- 4M Green Science Solar Rover, DIY STEAM Powered Kids Science Kit, Boys & Girls Ages 5+

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-09*