Brand NEW! 2.4 GHz wireless technology - with 2.4GHz RF wireless technology you can enjoy working at any angle and at distance of up to 30 ft Ergonomic design - The design of this keyboard with splitted key zones and gently sloped shape encourages natural position of hands, wrists, and forearm In maximum comfort for long use Internet Multimedia hotkeys - Get instant access to your commonly used internet and multimedia tools with the 20 built-in hotkeys this keyboard has to offer Advanced laser sensor - The advanced laser sensor technology lets you work on almost any surface with improved speed, accuracy and reliability than traditional mice Dpi switch Navigation hotkeys - quickly and easily adjust mouse DPI resolution (800/ 1200/ 1600) for a faster response with the convenient DPI switch located at the top of mouse. This mouse also includes two convenient side internet forward back buttons for quick internet navigation 2.4GHz Radio Frequency Wireless Technology With 2.4GHz RF wireless technology you can enjoy working at any angle and at distance of up to 30 ft. Ergonomic Design The design of this keyboard with split key zones and gently sloped shape encourages natural position of hands, wrists, and forearm in maximum comfort for long use. Quiet Membrane Key Switches Membrane key switches provide a better tactile response and a quieter typing experience. Plus they last up to five million keystrokes. Internet Multimedia Keys Get instant access to your commonly used Internet and multimedia tools with the 20 built-in hotkeys this keyboard has to offer. Operating System: Windows 2000 / XP / Vista / 7 / 8 / 10; Connectivity Interface: USB port for wireless - All international buyers are responsible for all tax, duties and/or customs fees.