The Apple Watch is designed to remain dark until a wearer raises his or her arm. In the prototypes worn around the Cupertino campus at the end of last year, this feature was still glitchy. For Marc Newson, it took three attemptsan escalation of acting styles, from naturalism to melodramabefore his screen came to life. Under normal circumstances, the screen will then show one of nine watch faces, each customizable. One will show the time alongside a brightly lit flower, butterfly, or jellyfish; these will be in motion, against a black background. This imagery had dominated the launch, and Ive now explained his enthusiasm for it. He picked up his iPhone 6 and pressed the home button. The whole of the display comes on, he said. That, to me, feels very, very old. (The iPhone 6 reached stores two weeks later.) He went on to explain that an Apple Watch uses a new display technology whose blacks are blacker than those in an iPhones L.E.D. display. This makes it easier to mask the point where, beneath a glass surface, a display ends and its frame begins. An Apple Watch jellyfish swims in deep space, and becomes, Ive said, as much an attribute of the watch as an image. On a current iPhone screen, a jellyfish would be pinned against dark gray, and framed in black, and, Ive said, have much less magic.