For nearly 40 years, Apple has made electronic devices in all shapes and sizes. The Watch is the very first that is not just portable, but wearable. That has meant rethinking a lot of the hardware and software principles that were developed for the Mac, iPod, iPhone and iPad – and introducing some completely original concepts.

Of course, this is not the first ‘smart watch’. But by thinking through what really matters to users, and melding technology with fashion, Apple has created a device that you will actually want on your wrist. And that is new. Read on to find out exactly what it means.