1、ERGONOMIC DESIGN: Vertical grip design keeps your forearm muscles in their comfortable position for smoother and more flexible movement, reducing arm discomfort and effectively relieving wrist pain. 2、ADJUSTABLE DPI: Vertical mouse can be switched between 3 available DPI options (800, 1200, 1600) to adjust the ergonomic gaming mouse responsiveness to your needs and preferences. 3、OPTICAL DESIGN: Ergonomic mouse featured optical tracking technology helps ensure greater sensitivity for precise tracking on a variety of surfaces. 4、THUMB BUTTONS AND RGB LEDS: Use the back and forward buttons near the thumb area for maximum convenience. When you forget to click the back button every time, simply click once to jump to the desired page. Adjustable RGB LED light with 6 different color transitions for nighttime use. The special design enhances your sense of use. 5、PLUG AND PLAY: To avoid the hassle of being tied up by wires or cables, plug the USB receiver into your computer or connect it to Bluetooth and use it, compatible with for Windows 7 8 10 XP Vista 7 8, for Linux, for OS X operating systems. Suitable for laptops, PCs, tablets and other devices.