DESC: The Logitech® MX™610 Laser Cordless Mouse redefines performance with ultra-precise laser tracking on more surfaces and interference-free 2.4 GHz digital cordless technology. As the world's first smart mouse, it extends battery life by syncing with your PC; it sleeps, wakes up, and shuts down when your PC does. The MX610 also detects and eliminates wireless interference and alerts you when the batteries are low.