CHUYI 2.4GHz Wireless Ergonomic Vertical Mouse Optical Office Cordless Rechargeable Mice Gaming Mouse with USB Receiver for PC Computer Laptop Notebook for Right Hand (Blue) Comfortable: Superior ergonomic design, the product dimensions is 3.97*3.15*2.83 inch, all buttons are easily operable without contorting your fingers. The button force is light for easy clicking, but still firm enough to avoid accidental actuation Smooth, Precise: 1600 DPI resolution optical tracking technology provides more sensitivity than standard optical mice for smooth and precise tracking on a wide range of surfaces. 10 m launch distance, 2.4 GHz wireless technology dual channel transmission,ergonomic 2.4GHz wireless vertical mouse is as good as it gets when it comes to comfortable mice Convenient: Side of the custom button can be set up and down the page, improve operating speed, increase efficiency. The superior choice for internet surfers, gamers and people who work at length at the computer Rechargeable Battery: Requires no batteries, auto-sleep feature conserves power and extends battery life, it will wake if you press its right or left button. Power switch is at the bottom of the mouse, you can switch it off when not in use Wide Compatibility: This comfortable ergonomic mouse is compatible with Mac OS X, Linux and all versions of Windows. This mouse features a plug & play nano receiver that you plug into the USB port of your laptop or computer for connectivity