GoolRC Mini RC Submarine, 2.4GHz Remote Control Boat, 6 Channels DIY Under Water Ship RC Boat

Easy to build but there are no english instructions. The pictures are OK though. Construction requires a razor knife to cut the foam. You have to cut the foam into several curved shapes to fit the curvature of the hull. Works fine on the surface out to about 8 or 10 feet. but it loses connection even at about a foot away as soon as the sub antenna goes under water. Sub will sink on its own. The only control you have for up and down is a vertical thruster under the bow. Left and right turning is poor. Forward and reverse are adequate but the sub doesn't track straight and turning thrusters don't help. I would not recommend this even at half the price.

Very fun.

first of, it took 3 and a half weeks to arrive, by the packaging it was definitely shipped from China and not USA. If you think you will get a submarine that runs out of the box look somewhere else, this was a box full of parts for assembly yourself. As normal chinese translations the instructions are awful, but at least is easy to figure it out. After an hour to put it together because you even have to cut the foam to put inside I put it in our pool and IT WORKS!....AS A BOAT!, yeah, it moves forwards and backwards but as soon as it get full of water and gets 6 inches deep get ready to swim because it stops responding to the remote and there is your $50 dollars submarine, going to the deep of your pool. Pack it up and ready to return it for a refund. A complete waste of my time...

If you are using this in your pool, the most important adjustment is to cut the poly styrofoam inside slightly larger than specified so that when all the air inside has vacated, the sub is slightly buoyant. Once the antenna goes under water, at least in a salt water pool, all communication is lost. If you get the buoyancy just right, it will glide for a moment under water than drift to surface. If not, you will have to dive down after it. That said, although I get the reason for side thruster steering, it is much more resilient to child abuse than an actual rudder, it is pretty much useless for actually steering the u-boat in the pool because it is too close to the center. Great toy once you get the buoyancy adjusted. One other note, the screws are not stainless, after only one run, when I disassembled to adjust the amount of foam, they had started to rust already. Not sure if this will help, but you may want to coat them with vasaleen or grease to inhibit that.

My grandson (age 9) enjoys it. It takes some getting used to in how to make it sink and then return to the surface. As with other similar remote water toys we have seen on Amazon they frequently seem to go slower than what we viewed on the video.

This box says it's for 8 yr + BULL!! My 9 yr old was frustrated & gave up in 10 minutes & he is gifted. Way too many tiny screws kids can't deal with, wires that need connecting Not for children at all. Once put together we tested it out in the pool and found at a certain depth the signal fails and it sinks. We are significantly sad with this purchase. It looks cheap compared to the other 2 robots I bought for the pool Both of which work wonderfully, (One is a whale and one is a shark) Both of those together cost less than this one!! Sad!!!

Excellent product. Just what I ordered. Thank you

spent days assembling this product and I couldnt even get the controller LED light to go on. Chinese-English instructions misleading and no way to get any support to make this poorly made product work.

Se lo regalé a mi esposo, le gustó mucho. Funciona muy bien, cuando se aleja demasiado del control remoto pierde contacto y hay que recogerlo. Excelente juguete para la alberca.