Symmetrical 3-button mouse: Can be ideally used by both left- and right-handed users and offers a modern design and pleasant feel Interference-free 2.4 GHz wireless technology: Enjoy wireless freedom within a range of up to 10 metres. The mouse has GS approval (‘Tested Safety’) Optical sensor: The resolution of 1,200 dpi ensures precise and smooth control of the mouse pointer for all types of office work (word processing, Internet, image editing, etc.) Simple plug & play installation: Simply plug the nano USB dongle into the USB port of your end device - and you're done. No additional software or technical knowledge required Convenient battery status indicator: Indicates when it is time to change the battery. The wireless mouse only requires one AA battery (included)