The Logitech V550 Nano is an innovative new mouse that offers a few significant features that would be useful to anyone that uses an external mouse with a notebook. Most significantly is the 18+ month battery life, which is very handy for any wireless mouse. The battery is also USB-rechargeable. The mouse can be turned off to further conserve battery life, and boasts an auto-shutoff feature. Another important feature is the small "Plug-and-Forget Nano-Receiver". The receiver is so small that it barely protrudes from the notebook, making it practical and convenient to always leave in place, ready for use.