Wireless mouse scanning technology laser motion sensor optical interface usb max resolution 1 600 dpi number of keys 3 compatible operating systems mac os x windows 7 windows 8 windows vista windows 10 windows xp scroll wheel feature 2 way scrolling power supply battery aaa lr03 properties adjustable resolution wireless design left handed mouse extra keys scroll wheel range 8 m frequency range 24 ghz colours blue black motif bicolour