You buy a piece of jewelry because you like its design. Imagine, though, buying a piece of jewelry because you like its general shape, not bothering about the design itself because you can switch it whenever you'd like to something else. Such is the nature of tago arc, a new smart bracelet that doesn't trifle with matters of health and fitness. Instead, tago arc is all about style, something it caters to no matter one's personal style via the use of an e-ink display. With this display and a related smartphone, users can flash a new design onto the bracelet, changing its look digitally in about one second.