New Logitech Darkfield Laser Tracking works on more surfaces than other mice--even on glass Tiny Logitech Unifying receiver stays in your computer--plug it in, forget it, even add compatible wireless devices without multiple USB receivers Flexible recharging system for easy charging through your computer or a power outlet, even when you're using your mouse Hyper-fast scrolling lets you fly through long documents and web pages Sculpted right-handed shape with stealth thumb controls for rapid-fire web browsing, application switching, zooming and more

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