GLINK 3D Optical wired USB Mouse for Laptop Computer PC (Black) High DPI Resolution with compactness, the Terabyte 3D Optical Wired USB Mouse (Black) can fit in either of your hand and let you execute your daily personal computing intuitively. Even with a small movement on your mouse pad, you can make the on-screen cursor move expansively. This 3D Optical Wired USB Mouse features 1600 DPI resolution so that it shifts with a high responsiveness to different areas on the computer screen when you make even small movements on the mouse pad.  Optical Sensor Technology The 3D Optical Wired USB Mouse features the unique Optical Sensor Technology that allows you to run it on uneven and rugged surfaces without any hitch. Your multitasking would go on incessantly without any break even if you are using this 3D Optical Wired USB Mouse on an irregular surface or without a mouse pad.