Wireless mouse M185 with 1000dpi resolution. No delays or dropouts. The tiny wireless receiver gives you a connection you can count on. With 12 months of battery life, you don not have to deal with the hassle of frequent battery changes. Reliability for plus a 3-year limited hardware warranty. It works with Window based, Linux and Mac computers. So small and unobtrusive, you can plug it into a USB port and forget about it. Can go for a year without battery hassles. The On/off switch and smart sleep mode help conserve power. No software, no hassles you simply plug in the tiny nano receiver and start using your mouse right away. The contoured design feels good in either hand and offers more comfort than a touchpad.