DELTACO wireless optical mouse, 2.4 GHz, 3 buttons and scroll wheel, 1200 dpi, USB nano receiver, black Wireless mouse with optical sensor. The mouse is connected to the computer with a small and discreet USB receiver, which is especially suitable for laptops. There is no need to install separate drivers. Simply plug the receiver into a free USB port and install two AAA batteries in the mouse. • 1200 dpi • USB nano receiver • 3 buttons and scroll wheel • Up to 10 meters range • Compatible operating systems: Windows 7 or later, OS 10.8 or later and Chrome OS Operates on two AAA batteries (not included) Package contents: mouse and USB nano receiver