Logitech Marathon M705 Wireless Mouse - BlackLogitech Marathon Mouse M705 lets you power on and on. It uses far less power than comparable wireless mice from other companies, so you'll go up to three full years between battery changes. And it uses a tiny wireless receiver that stays plugged in to your computer, so your mouse is ready to go whenever, wherever, and for as long as it takes. Plus, hyper fast scrolling means you'll fly through long documents to find what you need in a flash. Laser