The Logitech® Wireless Mouse M305 offers exceptional comfort and cordless convenience with its ergonomically designed soft rubber grip and the Plug-and-Forget Nano-receiver. With its inconspicuous size, you can plug the receiver in and leave it in your laptop so your mouse is always ready to use. Wherever you're working you can depend on the M305's secure and reliable connection courtesy of advanced 2.4 GHz wireless technology-virtually no delays or dropouts. Plus, the high-definition optical tracking (1000 dpi) enables responsive and smooth cursor control.