The Logitech M185 Wireless Mouse is the perfect size for laptop users or for desktop users who like the feel of a smaller mouse. M185 is ready when you are. Simply plug the receiver into a USB port on your device to start working in seconds. The small size and smooth cursor control make it great for tight work-spaces and busy desks. Stay productive longer with the comfortable, contoured shape that follows the natural curve of your hand. Compact and wireless, the mouse fits easily with your laptop in a bag—so you can take it anywhere you work. M185 is designed to be equally comfortable for both left- and right-handed users.The M185 features a reliable optical sensor coupled with up to a one year battery life for reliable portability. It comes with Logitech's Nano 2.4GHz wireless receiver which is so small, you can leave it permanently installed in your notebook and hardly know it is even there. Get more done by adding M185 to your laptop. According to a recent study, laptop users who chose this mouse over a touchpad were 50% more productive based on throughput computation in bits/second combining speed and accuracy averaged for all devices participating in the study. Logitech Ergonomic Lab study on 23 participants in (Oct / 2019) with two Logitech standard mice vs two standard embedded trackpads worked 30% faster!