The V200 is an update to the Logitech Cordless Notebook mouse. List of improvements include a convenient battery-light indicator that notifies you when the batteries are running low. With an one year battery life, it maybe a while before you ever see that light go on. The V200 is also plug-and-play - it includes a miniature USB wireless receiver that is paired individually with the mouse during manufacturing. When the receiver is plugged in, the mouse works immediately. Unlike the notebook mouse the V200 replaced, the USB receiver conveniently snaps onto the base of the mouse, much like the Microsoft Wireless Notebook Optical Mouse. This action automatically switches the mouse power off, saving battery life, while also making the mouse and receiver easy to transport.