Microsoft has introduced an advertisement of the tablet Surface Pro 4, comparing its product with the Apple MacBook Air, reports the Gazeta. The song of the advertisement displays the differences of the characteristics of both of the devices and calls the Appl notebook "less useless than a hat for your cat." The add describes the MacBook Air as “heavier", "slower", and "too square", and stresses the advantages of the Surface Pro 4 - touch screen, detachable keyboarda.