Review on MOJO Silent Bluetooth Vertical Mouse: Wireless Ergonomic Optical Mouse with Adjustable Sensitivity and Quiet Buttons - Perfect Grip Dual Mode (Bluetooth + 2.4 GHz Wireless) by Sam Doucette

This is my second ergonomic vertical mouse. The first to turn on the receiver had serious tracking problems. The cursor got stuck every time the mouse was used. The MOJO mouse works perfectly. I have no problems with scrolling. I can move the cursor with incredible precision. And since it's a Bluetooth mouse, there's no need for a receiver, freeing up a much-needed USB port. Most of my devices (printers, scanners, portable hard drives) need to be plugged directly into my laptop to work. A USB hub does not work. There are so many USB ports on a laptop that freeing one up is a big hassle. I mentioned that the mouse is very comfortable to hold and use. No, it doesn't have rubberized surfaces, but it's not slippery at all. Highly recommended.