As the name suggests it stopped working within 3 minutes of my son starting using it. When I took it apart for inspection after opening it, I assumed it would be some kind of fatal error, such as: B. a burned out engine, but to my surprise I found that the wires of the battery were broken. The design has disadvantages in that the movement of the snake fatigues the wires where they connect to the battery. It's relatively easy to fix with a soldering gun, but I have no doubt this will happen again and again. Too bad because it's a pretty cool toy and my son loves it. He even likes to play with it when it's broken.