Kensington Pro Fit Wireless Combo Mouse and Keyboard Desktop Set (K72324US) 1000 DPI laser sensor on mouse provides high-definition tracking for enhanced performance 2.4GHz wireless connection allows for complete freedom and mobility Comfortable two-button, scroll wheel mouse design is ideal for mobile right-handed or left-handed users Compatible with Windows 8.1/8/7 Full-size keyboard layout features six rows including numeric keypad Plug & Play installation so you can be up and running quickly to start typing and scrolling Spill-proof protection on keyboard with a thin membrane that protects the electronics from liquids