Review on EIGIIS Ergonomic Trackball Handheld Wireless by Brian Dildine

I was looking for a device to use with my PC. It looked perfect. I've used it 3 times and it's on its way to the bin. I was very disappointed with the performance of this thing. I use it about 5 feet from its USB receiver. Keeps falling off. Can't click, move mouse or anything. He comes back, maybe after playing around with him for a whole minute. Turn off, turn on again, press different keys and so on. Tried different batteries. It's very annoying to use. I was hoping with all the good reviews this was a good deal but it wasn't. To update. Looking at my regular trackball, I figured out why this thing works like crap. The mouse is optical and the ball is solid green. It is unable to track movement. Take a felt-tip pen and cover the balloon with dots. So the eye has something to see. Fixed all the problems I had. Actually not a bad topic now. You have to puncture the factory like Logitech does.