♻️ Turn Trash into Tomorrow’s Tech – Build, Learn, and Lead the Green Revolution!
The 4M Fun Science Salt Water Robot kit empowers kids 5+ to build 7 unique eco-friendly science toys using recycled materials and modular parts. No batteries needed—powered by salt water and charcoal—this STEM-focused kit teaches mechanical principles, clean energy, and environmental responsibility through hands-on, creative play. Compact and ready-to-use, it’s ideal for eco-conscious families and classrooms aiming to inspire the next generation of green innovators.
| Product Dimensions | 6.35 x 16.51 x 21.59 cm; 117.93 g |
| Manufacturer recommended age | 5 years and up |
| Item model number | 3688 |
| Educational Objective(s) | Chemical reactions and alternative energy sources |
| Language: | English |
| Number of Puzzle Pieces | 1 |
| Assembly Required | Yes |
| Batteries Required? | No |
| Batteries Included? | No |
| tech_spec_battery_description_toys | None (powered by salt water and charcoal) |
| Material Type(s) | Plastic |
| Remote Control Included? | No |
| Color | Brown |
| ASIN | B00AV8XBGG |
R**H
Very good
Good experiment
U**K
good for kids
nice one worth to buy
W**S
works well !
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.
M**D
Good
Good
M**O
Read the fine print - it doesn’t come with seeds
My son was very excited about setting this up and we were both disappointed to find that there’s actually no seeds or dirt included. We still have not managed to get out to a gardening store to purchase what we need so it’s just sitting in a box. Bit of a birthday letdown.
Z**J
Fun and interesting
My 5 year old and my 7 year old had so much fun assembling the robot. They just needed help with screwing tightly. Otherwise, the instructions were pretty straightforward. And they were so amazed when it started moving under the sun. It’s a good weekend activity for kids. They also learned about solar energy.
A**A
Not good one
Useless and does not work even if u read the instruction hundred times
A**R
سىء لانه لايوجد حبوب ولم يفلح معى المفروض يكون معاه حبوب وتربه معينه
P**L
My son had fun putting it together but it ended up not working with solar power or with batteries. He was disappointed.
L**R
Yo he comprado el producto "grow a maze", que como vienen en la imágen, tiene los textos de la caja en inglés. Además, se puede ver en la esquina inferior izquierda que vienen las instrucciones de montaje y uso en varios idiomas, entre ellos en español. Pero mi sorpresa fue que me llegó una caja con todos los textos en polaco, así como las instrucciones, con lo que no es lo que me vendieron. Podrian haber avisado o al menos no poner una foto de un producto que no es el que luego van a enviar. Ahora bien, es una pasada para los peques (y no tan peques) ver cómo van creciendo las plantas.
K**N
So educational and fun for all ages! My daughter loved it and she is a teen but she loves science and it was something fun we can do together!
M**A
The instructions are clear and easy to build. Only problem it had was the battery not being able to stay in position for it to work properly. So I used elastic bands to keep it in place. Without the plastic bands, it was stopping and going.
A**N
Comprei-o para presentear um adolescente que adorou. É bem pequeno (muito menor que eu esperava), mas funciona perfeitamente. Quem o recebeu gostou muito. Recomendo sua compra.
Trustpilot
3 weeks ago
5 days ago
