You don't have to stay tied to your desk. Or live with the chaos of cords. With Logitech wireless mice, you're free. Free to be more productive and comfortable on the go. To keep your desk clutter-free. And to say "no thanks" to your notebook's tricky touch pad. Logitech Advanced 2.4 GHz wireless delivers even more robust, reliable performance than ever before, effectively eliminating delays and dropouts (compared to conventional 2.4 GHz and 27 MHz wireless technologies). The sculpted, ambidextrous design, with soft rubber grips, feels good in either hand - even after long hours of use. And it's portable for comfort on the go. The long 15 month battery life virtually eliminates the hassle of changing batteries. The On/Off button saves power, while an indicator light eliminates surprises. Laser precision means you'll enjoy smoother tracking on just about any surface. The tiny receiver stays in your notebook. Plus, you can easily add a compatible wireless mouse or keyboard without the hassle of multiple USB receivers.