CHUYI 2.4GHz Wireless Vertical Ergonomic Mouse 800/1200 / 1600 DPI Optical Mouse 6 Buttons Office Gaming Cordless Mice with a USB Receiver for PC Computer Laptop Comfortable Design:The vertical design provides better support for your forearm minimizing wrist pain that can come from twisting. You will remain comfortable even after long hours of clicking, tracking, and scrolling. Powerd by 2 AAA batteries (not include) Extremely Low Power Consumption. No need any driver, plug and play directly.Scientific ergonomic design encourages healthy neutral "handshake" wrist and arm positions for smoother movement and less overall strain 3 Adjustable DPI: 800-1200-1600, easily change the cursor sensitivity depending on your activity.To meet your multiple needs, either for daily work or gaming,1600 DPI Resolution Optical Tracking Technology provides more sensitivity than standard optical mice for smooth and precise tracking on a wide range of surfaces 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. Two Internet navigational buttons, back and forward, are conveniently located on the left side of mouse to provide you with Internet browser control with minimal hand movement, improve operating speed, increase efficiency Wide Compatibility: Well compatible with Windows7/8/10/XP, Vista7/8 and Linux etc. Fits for desktop, laptop, PC, Mac book and other devices