Logitech V450 Nano Cordless Laser Mouse - Midnight Blue Box Contents - Logitech V450 Nano Cordless Laser Mouse for Notebooks, 2.4-GHz Plug-and-Forget Nano-receiver Laser precision - Enjoy smoother cursor control on virtually any surface Powerful, reliable connection - Logitech's advanced 2.4 GHz wireless dramatically reduces interference 12-month battery life - Minimizes hassle and helps you stay more productive. Convenient on/off switch saves even more power Plug-and-Forget Nano-receiver - Barely larger than a coin and always ready to use