HDE Wireless Optical Computer Mouse 2.4 GHz Cordless USB Receiver Adjustable DPI (Black) DPI button easily adjusts the sensitivity between 3 DPI levels (1000/1200/1600) Scrolling wheel, page forward and backward buttons allow for easy internet navigation Optical laser tracking technology works on many surfaces Wireless mouse connects via USB 2.0 dongle receiver (packaged inside mouse battery port) | Powered by 2 x AAA batteries (not included) Compatible with Windows 10, Windows 8, Windows 7, Windows Vista or Windows XP; Mac OS 10.X and above