The CLiPtec RZK339 Wireless Multimedia Keyboard and Mouse Combo Set ???Essential Air??? is a practical combination of wireless keyboard and wireless mouse. It redefines the meaning of combining style and simplicity. The anti-interference function offers reliable 2.4GHz transmission and longer operational distance. 10 extra multimedia and function hot keys are all there ready for your one-quick application launching command. This keyboard provides low profile keys with comfortable stroke for a great typing experience and extremely comfortable and contains a 19mm Key pitch. Solid keyboard and keycap construction with long lasting coated key printing.The full size profile wireless mouse with changeable between 1000/1200 and 1600DPI optical that provide great working efficiency and performance.