?Designed for Long-time Use?This ergonomic wireless mouse has more buttons than a traditional mouse. Not only can help you adjust your ergonomic vertical mouse's DPI freely, but the two buttons on the side also allow you to browse the web pages and documents faster. ?Advanced 2.4GHZ Wireless Technology?The wireless mouse can be used at a working distance up to 10m with no interference. PLUG & PLAY, enjoy the convenience of a tangle-free and fast data transmission. You don't need to download any drivers or software, just plug the USB plug into your computer port and you can use the vertical mouse immediately. ?Easy of Use?Adopted advanced 2.4GHz wireless technology can work stably and fast on your Windows 10, Windows Vista, Linux, Mac OS X, Windows XP devices. This ergonomic mouse supports plug & play. (Note:next/previous buttons can't be used on IOS system). ?3 Different Sensitivity Options?The ergonomic wireless mouse has 3 adjustable DPI options (800/1000/1600 DPI), so you can easily change the cursor speed and enjoy different scenes. High DPI can improve your ergonomic wireless mouse accuracy. ?Ergonomic Design?NOTE:The USB receiver is on the bottom of the mouse.Exclusive 54° vertical angle encourages a healthy wrist and forearm posture which reduces muscle strain, so that your wrist and forearm smoother movement and less overall strain. The vertical mouse is designed for daily work and it makes work more comfortable!.