Wireless mouse series logitech m series scanning technology laser motion sensor optical interface usb max resolution 1 000 dpi number of keys 5 suitable for laptops compatible operating systems windows 8 windows 7 windows vista windows xp mac os x scroll wheel feature 4 way scrolling power supply battery aa lr06 properties wireless plug play design ergonomic extra keys scroll wheel onoff switch range 10 m frequency range 24 ghz colours