Wireless mouse M510, full-size, contoured design and soft side grips keep hand happy and in control. Can do more, faster with back/forward buttons and side-to-side scrolling plus zoom. Can even add more devices. Plug it. Forget it. Add to it. Designed to keep either hand happy. Soft side grips and a comfortable shape so you will feel good, even after long hours of use. Moving quickly through documents or browsing your favorite web sites is a breeze, especially for right-handers with buttons conveniently located under thumb. The power is in your hands. Can scroll side-to-side in documents or zoom in, out of photos and spreadsheets with a flick of finger. Can configure the controls to make them to do exactly what you want like switching applications, opening browser windows or jump to full screen while watching videos. Practically eliminates battery hassles. On/off switch and smart sleep mode extend battery life, while an indicator light eliminates surprises. The tiny receiver stays in your laptop. Plus can easily add a compatible wireless mouse or keyboard without the hassle of multiple USB receivers.