The Kensington 64380 PocketMouse Wireless USB Mouse is the ultimate mouse for size, ease, and comfort. Perfectly sized and styled for the notebook user who demands a stylish mouse that's comfortable to use and to carry, this mouse is also an ideal desktop mouse for people with smaller hands or children. Simply plug the mini receiver into a Mac or PC via an open USB port and you not only get wireless freedom, but Kensington's interference-free Quick RF wireless technology prevents annoying cursor hesitation to provide ultra-smooth movement and precise control. Complete with built-in power management that automatically turns off the mouse when stored, there is also an on/off switch to further extend battery life. The Kensington 64380 features programmable buttons and a scroll wheel to simplify tasks, as well as a stylish black-and-silver body that complements contemporary laptops and soft grips for all-day, slip-free comfort. The speed and pinpoint accuracy of Kensington's DiamondEye optical technology allows it to respond to even your fastest movements with accurate tracking and precise guidance on virtually any surface. The Kensington 64380 works right out of the box, with long-lasting reliability that is backed by a one-year manufacturer's warranty. This mouse requires a USB port on a PC running Windows 98, ME, 2000, or XP, or a Macintosh running Mac OS X or later. For more than 20 years, Kensington Technology Group has been creating innovative products that make the connection between you and your computer more enjoyable and productive. At the office, in the home, or on the move, Kensington solutions bring practicality, creativity and inspiration together in a comprehensive line of products that delight users and create lifelong customers.Kensington PocketMouse Wireless Ultra features advanced QuickRF technology and DiamondEye optical technology.