Review on Neewer 3-Wheels Wireless Video Camera Dolly: Motorized Electric Slider Dolly for DSLR, Camcorder, Gopro & Smartphone – Remote Control Included! by Shane Popo

I like this concept but it doesn't work as well as in the video and people assume it should work. I put my Canon R6 on it with a tripod. All of the weight was on the two non-powered wheels. He tended to fall. I had to readjust a few times to get it stable enough for camera use. I could never get it to make a straight line. He is always monitored. I ended up using my iPhone 12 Pro Max to record a video and it worked better. Therefore, you may want to use a lightweight camera or phone to use this device. If you plan to use your camera you really need to add some weight to the drive side. Unfortunately I haven't figured out how to do that. The reason I'm talking about the weight is because I used a motorized keyboard rating platform. Since the camera's weight was mostly on the non-drive side, the wheels lost traction and just spun. That is why I say that scales are needed. Ideally, if it were a few inches longer, the device would have four wheels. I would prefer if the device was powered by more than one wheel. I have only used this device on my desk. I haven't used it on the floor or outside. I don't think it would be good from the outside. The wheels may need to be replaced to give them better grip. I was a bit disappointed but you get what you pay for. For a little less than $100, that's fine. I think you can save on the more expensive ones.