Compact wireless mouse with ambidextrous contoured design helps in navigating comfortably on your computer Nano receiver connects to the USB port on your laptop and delivers 2.4GHz of wireless transmission for quick, lag-free operation from up to 10 metres 1,000dpi optical tracking sensor ensures precise targeting and fast manoeuvrability Scroll wheel allows you to flip through documents and webpages with ease Included AA battery provides power to run the mouse for one year (may vary based on user and computing conditions) Convenient on/off switch and smart sleep mode help make the battery