One-key-press for most used actionswith one-key-press to access most used actions, smart keyboard greatly enhances your productivity. Type fast, type smart12 function keys can be customized for your every favorite app. Same key acts different functions based on the application in use. Comfortable and quiet typingtilt angle and silent keycap design give you maximum comfort for long time typing. Ergonomic designwith an arc palmrest and concave keys help position your hands comfortably on the keyboard while you are typing. Spill resistant You will not worry accidental water spill to your keyboard. System requirements Windows 7, 8, 8.1, 10 or later Usb / ps2 Specifications Interface usb / ps2 Keycap concave Weight approx. 564 g Dimensions (w x h x d) 460 x 173 x 32.5 mm(18.11 x 6.77 x 1.06 inches) Colors black What's in the box Genius kb128 keyboard , brochure