Zelotes Professional LED Optical 2400 DPI 7 Button USB 2.4G Wireless Gaming Mouse for Pro Game Notebook, PC, Laptop, Computer This mouse adopts the top class of power saving chip, 5 times power saving than ordinary wireless mouse, standby time is over 36 months. Three layers power saving features, the mouse will be in dormancy stage in eight minutes without operation, will be in deep dormancy stage half an hour without operation, power consumption is only 0.0005mA, almost no power consumption, equal to 3 years standby time. This mouse is intelligent connectivity, no need to code, plug & play (No need CD driver) There are 4 levels of DPI, 600 -1000 -1600 -2400, default is 1000. Two different polling rates of 250Hz and 500Hz for you to choose.