15 months of battery life
Laser tracking delivers smooth, responsive, precise cursor control on surfaces that cause problems for optical mice
Tiny Logitech® Unifying receiver stays in your notebook. so there's no need to unplug it when you move around
Ergonomically designed shape with soft rubber grip conforms to your hand to be naturally comfortable
Logitech® Advanced 2.4 GHz wireless connectivity gives you the reliability of a cord plus cordless convenience and freedom – fast data transmission and virtually no delays or dropouts
Has been posted a while ago at this price. As i have one from the last deal, thought i would put it up again as it is a very nice mouse.