PRONOD 4000 DPI 8 Buttons LED Optical USB Wired Gaming Mice Computer Mouse ,Ergonomic&Aluminium Base ,Black 4 Different Kinds of LED backlight can be change while in useadding extra weight for gaming specially, it is inputted into the mouse directly Precision control with 4 DPI settings: 1000 / 2000 / 3000 / 4000. You can move it at either fast or low speeds, and it will always respond onscreen with exacting accuracy and the organic fluidity only possible with an optical sensor. 8-buttons wired mouse measures 13.2" x 3.54" x 1.57" with a 4.92 foot (1.7 meter) cable,Perfectly designed to fit snugly under your palm, the ergonomic shape of the mice gives gamers the most comfortable gaming experience ever, especially during the most testing of battles. Adopted 3050 Chip, Stable and fast, which had greatly extended game's practicability and ductility. Used OMRON micro switch, its life can be up to 10 million times, Package contents: GT9 Gaming Mouse, CD, and user manual